42109280731 has 32 divisors (see below), whose sum is σ = 49250073600. Its totient is φ = 35260632960.

The previous prime is 42109280699. The next prime is 42109280737. The reversal of 42109280731 is 13708290124.

It is not a de Polignac number, because 42109280731 - 2⁵ = 42109280699 is a prime.

It is a super-2 number, since 2×42109280731² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42109280737) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33445980 + ... + 33447238.

It is an arithmetic number, because the mean of its divisors is an integer number (1539064800).

Almost surely, 2^42109280731 is an apocalyptic number.

42109280731 is a deficient number, since it is larger than the sum of its proper divisors (7140792869).

42109280731 is a wasteful number, since it uses less digits than its factorization.

42109280731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1899.

The product of its (nonzero) digits is 24192, while the sum is 37.

The spelling of 42109280731 in words is "forty-two billion, one hundred nine million, two hundred eighty thousand, seven hundred thirty-one".