100142502 has 16 divisors (see below), whose sum is σ = 210826560. Its totient is φ = 31623912.

The previous prime is 100142491. The next prime is 100142503. The reversal of 100142502 is 205241001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100142503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 439108 + ... + 439335.

It is an arithmetic number, because the mean of its divisors is an integer number (13176660).

Almost surely, 2^100142502 is an apocalyptic number.

100142502 is an abundant number, since it is smaller than the sum of its proper divisors (110684058).

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

100142502 is a wasteful number, since it uses less digits than its factorization.

100142502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878467.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 100142502 is about 10007.1225634545. The cubic root of 100142502 is about 464.3792572793.

Adding to 100142502 its reverse (205241001), we get a palindrome (305383503).

The spelling of 100142502 in words is "one hundred million, one hundred forty-two thousand, five hundred two".