131261442 has 32 divisors (see below), whose sum is σ = 286948032. Its totient is φ = 39783744.

The previous prime is 131261411. The next prime is 131261461. The reversal of 131261442 is 244162131.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7333 + ... + 17784.

It is an arithmetic number, because the mean of its divisors is an integer number (8967126).

Almost surely, 2^131261442 is an apocalyptic number.

131261442 is an abundant number, since it is smaller than the sum of its proper divisors (155686590).

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

131261442 is a wasteful number, since it uses less digits than its factorization.

131261442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25202.

The product of its digits is 1152, while the sum is 24.

The square root of 131261442 is about 11456.9385963267. The cubic root of 131261442 is about 508.2129457334.

The spelling of 131261442 in words is "one hundred thirty-one million, two hundred sixty-one thousand, four hundred forty-two".