42251144 has 32 divisors (see below), whose sum is σ = 88263000. Its totient is φ = 18826752.

The previous prime is 42251119. The next prime is 42251149. The reversal of 42251144 is 44115224.

It can be written as a sum of positive squares in 4 ways, for example, as 35164900 + 7086244 = 5930^2 + 2662^2 .

It is not an unprimeable number, because it can be changed into a prime (42251149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3989 + ... + 10020.

Almost surely, 2^42251144 is an apocalyptic number.

It is an amenable number.

42251144 is an abundant number, since it is smaller than the sum of its proper divisors (46011856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42251144 is a wasteful number, since it uses less digits than its factorization.

42251144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14057 (or 14053 counting only the distinct ones).

The product of its digits is 1280, while the sum is 23.

The square root of 42251144 is about 6500.0879994043. The cubic root of 42251144 is about 348.2941319152.

Adding to 42251144 its reverse (44115224), we get a palindrome (86366368).

The spelling of 42251144 in words is "forty-two million, two hundred fifty-one thousand, one hundred forty-four".