42212751 has 64 divisors (see below), whose sum is σ = 73156608. Its totient is φ = 21086208.

The previous prime is 42212741. The next prime is 42212759. The reversal of 42212751 is 15721224.

It is not a de Polignac number, because 42212751 - 2¹¹ = 42210703 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42212759) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 435135 + ... + 435231.

It is an arithmetic number, because the mean of its divisors is an integer number (1143072).

Almost surely, 2^42212751 is an apocalyptic number.

42212751 is a deficient number, since it is larger than the sum of its proper divisors (30943857).

42212751 is a wasteful number, since it uses less digits than its factorization.

42212751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200.

The product of its digits is 1120, while the sum is 24.

The square root of 42212751 is about 6497.1340604916. The cubic root of 42212751 is about 348.1886033408.

Adding to 42212751 its reverse (15721224), we get a palindrome (57933975).

The spelling of 42212751 in words is "forty-two million, two hundred twelve thousand, seven hundred fifty-one".