42949511073 has 12 divisors (see below), whose sum is σ = 70900780288. Its totient is φ = 24542577720.

The previous prime is 42949511057. The next prime is 42949511113. The reversal of 42949511073 is 37011594924.

42949511073 is a `hidden beast` number, since 4 + 29 + 49 + 511 + 0 + 73 = 666.

It is not a de Polignac number, because 42949511073 - 2⁴ = 42949511057 is a prime.

It is a super-2 number, since 2×42949511073² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42949511023) 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, 340869073 + ... + 340869198.

Almost surely, 2^42949511073 is an apocalyptic number.

It is an amenable number.

42949511073 is a deficient number, since it is larger than the sum of its proper divisors (27951269215).

42949511073 is a wasteful number, since it uses less digits than its factorization.

42949511073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681738284 (or 681738281 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 42949511073 in words is "forty-two billion, nine hundred forty-nine million, five hundred eleven thousand, seventy-three".