42468939257 has 4 divisors (see below), whose sum is σ = 42469898640. Its totient is φ = 42467979876.

The previous prime is 42468939217. The next prime is 42468939269. The reversal of 42468939257 is 75293986424.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42468939257 - 2⁶ = 42468939193 is a prime.

It is a super-2 number, since 2×42468939257² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42468939196 and 42468939205.

It is not an unprimeable number, because it can be changed into a prime (42468939217) 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, 409907 + ... + 502952.

It is an arithmetic number, because the mean of its divisors is an integer number (10617474660).

Almost surely, 2^42468939257 is an apocalyptic number.

It is an amenable number.

42468939257 is a deficient number, since it is larger than the sum of its proper divisors (959383).

42468939257 is an equidigital number, since it uses as much as digits as its factorization.

42468939257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959382.

The product of its digits is 26127360, while the sum is 59.

The spelling of 42468939257 in words is "forty-two billion, four hundred sixty-eight million, nine hundred thirty-nine thousand, two hundred fifty-seven".