42520351304 has 8 divisors (see below), whose sum is σ = 79725658710. Its totient is φ = 21260175648.

The previous prime is 42520351243. The next prime is 42520351337. The reversal of 42520351304 is 40315302524.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 42053704900 + 466646404 = 205070^2 + 21602^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×42520351304³ (a number of 33 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2657521949 + ... + 2657521964.

Almost surely, 2^42520351304 is an apocalyptic number.

It is an amenable number.

42520351304 is a deficient number, since it is larger than the sum of its proper divisors (37205307406).

42520351304 is a wasteful number, since it uses less digits than its factorization.

42520351304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5315043919 (or 5315043915 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 42520351304 its reverse (40315302524), we get a palindrome (82835653828).

The spelling of 42520351304 in words is "forty-two billion, five hundred twenty million, three hundred fifty-one thousand, three hundred four".