1013240421 has 20 divisors (see below), whose sum is σ = 1550528364. Its totient is φ = 659016000.

The previous prime is 1013240411. The next prime is 1013240441. The reversal of 1013240421 is 1240423101.

1013240421 is a `hidden beast` number, since 1 + 0 + 1 + 3 + 240 + 421 = 666.

1013240421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 525051396 + 488189025 = 22914^2 + 22095^2 .

It is not a de Polignac number, because 1013240421 - 2¹⁰ = 1013239397 is a prime.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1013240394 and 1013240403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013240401) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 149230 + ... + 155871.

Almost surely, 2^1013240421 is an apocalyptic number.

It is an amenable number.

1013240421 is a deficient number, since it is larger than the sum of its proper divisors (537287943).

1013240421 is an equidigital number, since it uses as much as digits as its factorization.

1013240421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305154 (or 305145 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1013240421 is about 31831.4376206919. The cubic root of 1013240421 is about 1004.3941369459.

Adding to 1013240421 its reverse (1240423101), we get a palindrome (2253663522).

The spelling of 1013240421 in words is "one billion, thirteen million, two hundred forty thousand, four hundred twenty-one".