42378051031 has 16 divisors (see below), whose sum is σ = 43394665600. Its totient is φ = 41373980928.

The previous prime is 42378051029. The next prime is 42378051043. The reversal of 42378051031 is 13015087324.

It is a cyclic number.

It is not a de Polignac number, because 42378051031 - 2¹ = 42378051029 is a prime.

It is a super-2 number, since 2×42378051031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42378051431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11368690 + ... + 11372416.

It is an arithmetic number, because the mean of its divisors is an integer number (2712166600).

Almost surely, 2^42378051031 is an apocalyptic number.

42378051031 is a deficient number, since it is larger than the sum of its proper divisors (1016614569).

42378051031 is a wasteful number, since it uses less digits than its factorization.

42378051031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5338.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 42378051031 in words is "forty-two billion, three hundred seventy-eight million, fifty-one thousand, thirty-one".