42151561250 has 30 divisors (see below), whose sum is σ = 79022494551. Its totient is φ = 16857721000.

The previous prime is 42151561247. The next prime is 42151561259. The reversal of 42151561250 is 5216515124.

It can be written as a sum of positive squares in 3 ways, for example, as 9745440961 + 32406120289 = 98719^2 + 180017^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=145175.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42151561259) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 7255847 + ... + 7261653.

Almost surely, 2^42151561250 is an apocalyptic number.

42151561250 is a deficient number, since it is larger than the sum of its proper divisors (36870933301).

42151561250 is an frugal number, since it uses more digits than its factorization.

42151561250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11636 (or 5814 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 32.

Multiplying 42151561250 by its sum of digits (32), we get a square (1348849960000 = 1161400²).

The spelling of 42151561250 in words is "forty-two billion, one hundred fifty-one million, five hundred sixty-one thousand, two hundred fifty".