42015012650 has 48 divisors (see below), whose sum is σ = 84182242200. Its totient is φ = 15509007360.

The previous prime is 42015012649. The next prime is 42015012679. The reversal of 42015012650 is 5621051024.

It can be written as a sum of positive squares in 12 ways, for example, as 198443569 + 41816569081 = 14087^2 + 204491^2 .

It is a super-2 number, since 2×42015012650² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3379646 + ... + 3392054.

Almost surely, 2^42015012650 is an apocalyptic number.

42015012650 is an abundant number, since it is smaller than the sum of its proper divisors (42167229550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42015012650 is a wasteful number, since it uses less digits than its factorization.

42015012650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17643 (or 17638 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 42015012650 its reverse (5621051024), we get a palindrome (47636063674).

The spelling of 42015012650 in words is "forty-two billion, fifteen million, twelve thousand, six hundred fifty".