102131054 has 4 divisors (see below), whose sum is σ = 153196584. Its totient is φ = 51065526.

The previous prime is 102131033. The next prime is 102131059. The reversal of 102131054 is 450131201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 450131201 = 13 ⋅34625477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102131059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25532762 + ... + 25532765.

It is an arithmetic number, because the mean of its divisors is an integer number (38299146).

Almost surely, 2^102131054 is an apocalyptic number.

102131054 is a deficient number, since it is larger than the sum of its proper divisors (51065530).

102131054 is an equidigital number, since it uses as much as digits as its factorization.

102131054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51065529.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 102131054 is about 10105.9909954442. The cubic root of 102131054 is about 467.4328941780.

Adding to 102131054 its reverse (450131201), we get a palindrome (552262255).

The spelling of 102131054 in words is "one hundred two million, one hundred thirty-one thousand, fifty-four".