531890142 has 32 divisors (see below), whose sum is σ = 1279737600. Its totient is φ = 143970048.

The previous prime is 531890141. The next prime is 531890159. The reversal of 531890142 is 241098135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531890141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 332467 + ... + 334062.

It is an arithmetic number, because the mean of its divisors is an integer number (39991800).

Almost surely, 2^531890142 is an apocalyptic number.

531890142 is an abundant number, since it is smaller than the sum of its proper divisors (747847458).

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

531890142 is a wasteful number, since it uses less digits than its factorization.

531890142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666560.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 531890142 is about 23062.7435922095. The cubic root of 531890142 is about 810.2281235229.

The spelling of 531890142 in words is "five hundred thirty-one million, eight hundred ninety thousand, one hundred forty-two".