42440344225402 has 8 divisors (see below), whose sum is σ = 63660559967316. Its totient is φ = 21220157569632.

The previous prime is 42440344225399. The next prime is 42440344225423. The reversal of 42440344225402 is 20452244304424.

It can be written as a sum of positive squares in 2 ways, for example, as 39190216723681 + 3250127501721 = 6260209^2 + 1802811^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×42440344225402² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3158403 + ... + 9739414.

Almost surely, 2^{42440344225402} is an apocalyptic number.

42440344225402 is a deficient number, since it is larger than the sum of its proper divisors (21220215741914).

42440344225402 is a wasteful number, since it uses less digits than its factorization.

42440344225402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14543072.

The product of its (nonzero) digits is 983040, while the sum is 40.

Adding to 42440344225402 its reverse (20452244304424), we get a palindrome (62892588529826).

The spelling of 42440344225402 in words is "forty-two trillion, four hundred forty billion, three hundred forty-four million, two hundred twenty-five thousand, four hundred two".