131124042 has 64 divisors (see below), whose sum is σ = 337305600. Its totient is φ = 36981360.

The previous prime is 131124011. The next prime is 131124061. The reversal of 131124042 is 240421131.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27667 + ... + 32057.

It is an arithmetic number, because the mean of its divisors is an integer number (5270400).

Almost surely, 2^131124042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131124042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168652800).

131124042 is an abundant number, since it is smaller than the sum of its proper divisors (206181558).

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

131124042 is a wasteful number, since it uses less digits than its factorization.

131124042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4488 (or 4482 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 131124042 is about 11450.9406600506. The cubic root of 131124042 is about 508.0355571656.

Adding to 131124042 its reverse (240421131), we get a palindrome (371545173).

The spelling of 131124042 in words is "one hundred thirty-one million, one hundred twenty-four thousand, forty-two".