42546251 has 16 divisors (see below), whose sum is σ = 48722688. Its totient is φ = 36775200.

The previous prime is 42546247. The next prime is 42546269. The reversal of 42546251 is 15264524.

It is not a de Polignac number, because 42546251 - 2² = 42546247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42546211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52985 + ... + 53781.

It is an arithmetic number, because the mean of its divisors is an integer number (3045168).

Almost surely, 2^42546251 is an apocalyptic number.

42546251 is a deficient number, since it is larger than the sum of its proper divisors (6176437).

42546251 is a wasteful number, since it uses less digits than its factorization.

42546251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042.

The product of its digits is 9600, while the sum is 29.

The square root of 42546251 is about 6522.7487304050. The cubic root of 42546251 is about 349.1031487404.

The spelling of 42546251 in words is "forty-two million, five hundred forty-six thousand, two hundred fifty-one".