400442102 has 4 divisors (see below), whose sum is σ = 600663156. Its totient is φ = 200221050.

The previous prime is 400442087. The next prime is 400442111. The reversal of 400442102 is 201244004.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100110524 + ... + 100110527.

It is an arithmetic number, because the mean of its divisors is an integer number (150165789).

Almost surely, 2^400442102 is an apocalyptic number.

400442102 is a deficient number, since it is larger than the sum of its proper divisors (200221054).

400442102 is a wasteful number, since it uses less digits than its factorization.

400442102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200221053.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 400442102 is about 20011.0494977150. The cubic root of 400442102 is about 737.0776527301.

Adding to 400442102 its reverse (201244004), we get a palindrome (601686106).

The spelling of 400442102 in words is "four hundred million, four hundred forty-two thousand, one hundred two".