42005455231555 has 16 divisors (see below), whose sum is σ = 50470663045824. Its totient is φ = 33561627523200.

The previous prime is 42005455231513. The next prime is 42005455231567. The reversal of 42005455231555 is 55513255450024.

It is not a de Polignac number, because 42005455231555 - 2⁴⁵ = 6821083142723 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42808897 + ... + 43779133.

It is an arithmetic number, because the mean of its divisors is an integer number (3154416440364).

Almost surely, 2^{42005455231555} is an apocalyptic number.

42005455231555 is a deficient number, since it is larger than the sum of its proper divisors (8465207814269).

42005455231555 is a wasteful number, since it uses less digits than its factorization.

42005455231555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981246.

The product of its (nonzero) digits is 3000000, while the sum is 46.

The spelling of 42005455231555 in words is "forty-two trillion, five billion, four hundred fifty-five million, two hundred thirty-one thousand, five hundred fifty-five".