42634551 has 4 divisors (see below), whose sum is σ = 56846072. Its totient is φ = 28423032.

The previous prime is 42634541. The next prime is 42634567. The reversal of 42634551 is 15543624.

42634551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 42634551 - 2⁵ = 42634519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42634511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7105756 + ... + 7105761.

It is an arithmetic number, because the mean of its divisors is an integer number (14211518).

Almost surely, 2^42634551 is an apocalyptic number.

42634551 is a deficient number, since it is larger than the sum of its proper divisors (14211521).

42634551 is a wasteful number, since it uses less digits than its factorization.

42634551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14211520.

The product of its digits is 14400, while the sum is 30.

The square root of 42634551 is about 6529.5138410145. The cubic root of 42634551 is about 349.3444900782.

The spelling of 42634551 in words is "forty-two million, six hundred thirty-four thousand, five hundred fifty-one".