100431442 has 8 divisors (see below), whose sum is σ = 150727500. Its totient is φ = 50188944.

The previous prime is 100431439. The next prime is 100431467. The reversal of 100431442 is 244134001.

It can be written as a sum of positive squares in 2 ways, for example, as 60980481 + 39450961 = 7809^2 + 6281^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8317 + ... + 16432.

Almost surely, 2^100431442 is an apocalyptic number.

100431442 is a deficient number, since it is larger than the sum of its proper divisors (50296058).

100431442 is a wasteful number, since it uses less digits than its factorization.

100431442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26780.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 100431442 is about 10021.5488822836. The cubic root of 100431442 is about 464.8254511171.

Adding to 100431442 its reverse (244134001), we get a palindrome (344565443).

The spelling of 100431442 in words is "one hundred million, four hundred thirty-one thousand, four hundred forty-two".