42369921890 has 16 divisors (see below), whose sum is σ = 76276615032. Its totient is φ = 16945578624.

The previous prime is 42369921883. The next prime is 42369921931. The reversal of 42369921890 is 9812996324.

It can be written as a sum of positive squares in 4 ways, for example, as 42250391401 + 119530489 = 205549^2 + 10933^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223409 + ... + 366948.

Almost surely, 2^42369921890 is an apocalyptic number.

42369921890 is a deficient number, since it is larger than the sum of its proper divisors (33906693142).

42369921890 is a wasteful number, since it uses less digits than its factorization.

42369921890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597541.

The product of its (nonzero) digits is 1679616, while the sum is 53.

The spelling of 42369921890 in words is "forty-two billion, three hundred sixty-nine million, nine hundred twenty-one thousand, eight hundred ninety".