42442236551 has 32 divisors (see below), whose sum is σ = 51062930688. Its totient is φ = 34759549440.

The previous prime is 42442236503. The next prime is 42442236563. The reversal of 42442236551 is 15563224424.

It is not a de Polignac number, because 42442236551 - 2²² = 42438042247 is a prime.

It is a super-4 number, since 4×42442236551⁴ (a number of 44 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42442236581) 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, 11478335 + ... + 11482031.

It is an arithmetic number, because the mean of its divisors is an integer number (1595716584).

Almost surely, 2^42442236551 is an apocalyptic number.

42442236551 is a deficient number, since it is larger than the sum of its proper divisors (8620694137).

42442236551 is a wasteful number, since it uses less digits than its factorization.

42442236551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5631.

The product of its digits is 230400, while the sum is 38.

The spelling of 42442236551 in words is "forty-two billion, four hundred forty-two million, two hundred thirty-six thousand, five hundred fifty-one".