42131000 has 32 divisors (see below), whose sum is σ = 98588880. Its totient is φ = 16852000.

The previous prime is 42130993. The next prime is 42131021. The reversal of 42131000 is 13124.

It is a happy number.

It is a super-2 number, since 2×42131000² = 3550042322000000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20066 + ... + 22065.

Almost surely, 2^42131000 is an apocalyptic number.

42131000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42131000 is an abundant number, since it is smaller than the sum of its proper divisors (56457880).

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

42131000 is a wasteful number, since it uses less digits than its factorization.

42131000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42152 (or 42138 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 42131000 is about 6490.8396991453. The cubic root of 42131000 is about 347.9636858218.

Adding to 42131000 its reverse (13124), we get a palindrome (42144124).

The spelling of 42131000 in words is "forty-two million, one hundred thirty-one thousand".