42731555034 has 32 divisors (see below), whose sum is σ = 99750260736. Its totient is φ = 11949248880.

The previous prime is 42731554997. The next prime is 42731555039. The reversal of 42731555034 is 43055513724.

It is a junction number, because it is equal to n+sod(n) for n = 42731554983 and 42731555001.

It is not an unprimeable number, because it can be changed into a prime (42731555039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10821622 + ... + 10825569.

It is an arithmetic number, because the mean of its divisors is an integer number (3117195648).

Almost surely, 2^42731555034 is an apocalyptic number.

42731555034 is an abundant number, since it is smaller than the sum of its proper divisors (57018705702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42731555034 is a wasteful number, since it uses less digits than its factorization.

42731555034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21647250.

The product of its (nonzero) digits is 252000, while the sum is 39.

The spelling of 42731555034 in words is "forty-two billion, seven hundred thirty-one million, five hundred fifty-five thousand, thirty-four".