42502203531 has 12 divisors (see below), whose sum is σ = 61646813800. Its totient is φ = 28217229120.

The previous prime is 42502203517. The next prime is 42502203533. The reversal of 42502203531 is 13530220524.

It is a happy number.

42502203531 is a `hidden beast` number, since 42 + 50 + 220 + 353 + 1 = 666.

It is not a de Polignac number, because 42502203531 - 2¹³ = 42502195339 is a prime.

It is a super-2 number, since 2×42502203531² (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 = 42502203495 and 42502203504.

It is not an unprimeable number, because it can be changed into a prime (42502203533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9795481 + ... + 9799818.

Almost surely, 2^42502203531 is an apocalyptic number.

42502203531 is a deficient number, since it is larger than the sum of its proper divisors (19144610269).

42502203531 is a wasteful number, since it uses less digits than its factorization.

42502203531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19595546 (or 19595543 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The spelling of 42502203531 in words is "forty-two billion, five hundred two million, two hundred three thousand, five hundred thirty-one".