42120513455 has 16 divisors (see below), whose sum is σ = 51384819744. Its totient is φ = 33138938880.

The previous prime is 42120513431. The next prime is 42120513467. The reversal of 42120513455 is 55431502124.

It is not a de Polignac number, because 42120513455 - 2¹⁰ = 42120512431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39626 + ... + 292935.

It is an arithmetic number, because the mean of its divisors is an integer number (3211551234).

Almost surely, 2^42120513455 is an apocalyptic number.

42120513455 is a deficient number, since it is larger than the sum of its proper divisors (9264306289).

42120513455 is a wasteful number, since it uses less digits than its factorization.

42120513455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332986.

The product of its (nonzero) digits is 24000, while the sum is 32.

The spelling of 42120513455 in words is "forty-two billion, one hundred twenty million, five hundred thirteen thousand, four hundred fifty-five".