42161250 has 40 divisors (see below), whose sum is σ = 105378768. Its totient is φ = 11242000.

The previous prime is 42161237. The next prime is 42161269. The reversal of 42161250 is 5216124.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1872 + ... + 9371.

Almost surely, 2^42161250 is an apocalyptic number.

42161250 is an abundant number, since it is smaller than the sum of its proper divisors (63217518).

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

42161250 is a wasteful number, since it uses less digits than its factorization.

42161250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11268 (or 11253 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 42161250 is about 6493.1694880081. The cubic root of 42161250 is about 348.0469450475.

Adding to 42161250 its reverse (5216124), we get a palindrome (47377374).

The spelling of 42161250 in words is "forty-two million, one hundred sixty-one thousand, two hundred fifty".