42003001231 has 4 divisors (see below), whose sum is σ = 42005920264. Its totient is φ = 42000082200.

The previous prime is 42003001193. The next prime is 42003001241. The reversal of 42003001231 is 13210030024.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42003001231 - 2⁹ = 42003000719 is a prime.

It is a super-2 number, since 2×42003001231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42003001241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1437825 + ... + 1466746.

It is an arithmetic number, because the mean of its divisors is an integer number (10501480066).

Almost surely, 2^42003001231 is an apocalyptic number.

42003001231 is a deficient number, since it is larger than the sum of its proper divisors (2919033).

42003001231 is a wasteful number, since it uses less digits than its factorization.

42003001231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2919032.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 42003001231 its reverse (13210030024), we get a palindrome (55213031255).

The spelling of 42003001231 in words is "forty-two billion, three million, one thousand, two hundred thirty-one".