1142421401 has 16 divisors (see below), whose sum is σ = 1259737920. Its totient is φ = 1027404480.

The previous prime is 1142421391. The next prime is 1142421421. The reversal of 1142421401 is 1041242411.

1142421401 = 10186² + 10187² + ... + 10196².

It is a cyclic number.

It is not a de Polignac number, because 1142421401 - 2⁶ = 1142421337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142421421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 483515 + ... + 485871.

It is an arithmetic number, because the mean of its divisors is an integer number (78733620).

Almost surely, 2^1142421401 is an apocalyptic number.

1142421401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1142421401 is a deficient number, since it is larger than the sum of its proper divisors (117316519).

1142421401 is a wasteful number, since it uses less digits than its factorization.

1142421401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2824.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 1142421401 is about 33799.7248657441. The cubic root of 1142421401 is about 1045.3830242029.

Adding to 1142421401 its reverse (1041242411), we get a palindrome (2183663812).

The spelling of 1142421401 in words is "one billion, one hundred forty-two million, four hundred twenty-one thousand, four hundred one".