131421542 has 16 divisors (see below), whose sum is σ = 226114080. Its totient is φ = 56118528.

The previous prime is 131421529. The next prime is 131421557. The reversal of 131421542 is 245124131.

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, 13067 + ... + 20822.

It is an arithmetic number, because the mean of its divisors is an integer number (14132130).

Almost surely, 2^131421542 is an apocalyptic number.

131421542 is a deficient number, since it is larger than the sum of its proper divisors (94692538).

131421542 is a wasteful number, since it uses less digits than its factorization.

131421542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34175.

The product of its digits is 960, while the sum is 23.

The square root of 131421542 is about 11463.9234993958. The cubic root of 131421542 is about 508.4194847683.

Adding to 131421542 its reverse (245124131), we get a palindrome (376545673).

The spelling of 131421542 in words is "one hundred thirty-one million, four hundred twenty-one thousand, five hundred forty-two".