42500144 has 20 divisors (see below), whose sum is σ = 82776696. Its totient is φ = 21138432.

The previous prime is 42500137. The next prime is 42500147. The reversal of 42500144 is 44100524.

It is not an unprimeable number, because it can be changed into a prime (42500147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3794 + ... + 9969.

Almost surely, 2^42500144 is an apocalyptic number.

It is an amenable number.

42500144 is a deficient number, since it is larger than the sum of its proper divisors (40276552).

42500144 is a wasteful number, since it uses less digits than its factorization.

42500144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13964 (or 13958 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 42500144 is about 6519.2134494891. The cubic root of 42500144 is about 348.9769964833.

Adding to 42500144 its reverse (44100524), we get a palindrome (86600668).

The spelling of 42500144 in words is "forty-two million, five hundred thousand, one hundred forty-four".