159278402 has 4 divisors (see below), whose sum is σ = 238917606. Its totient is φ = 79639200.

The previous prime is 159278393. The next prime is 159278429. The reversal of 159278402 is 204872951.

159278402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 159037321 + 241081 = 12611^2 + 491^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39819599 + ... + 39819602.

Almost surely, 2^159278402 is an apocalyptic number.

159278402 is a deficient number, since it is larger than the sum of its proper divisors (79639204).

159278402 is an equidigital number, since it uses as much as digits as its factorization.

159278402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79639203.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 159278402 is about 12620.5547421657. The cubic root of 159278402 is about 542.0661606849.

The spelling of 159278402 in words is "one hundred fifty-nine million, two hundred seventy-eight thousand, four hundred two".