71042402 has 8 divisors (see below), whose sum is σ = 110238300. Its totient is φ = 34296304.

The previous prime is 71042383. The next prime is 71042429. The reversal of 71042402 is 20424017.

It can be written as a sum of positive squares in 2 ways, for example, as 62742241 + 8300161 = 7921^2 + 2881^2 .

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, 612377 + ... + 612492.

Almost surely, 2^71042402 is an apocalyptic number.

71042402 is a deficient number, since it is larger than the sum of its proper divisors (39195898).

71042402 is a wasteful number, since it uses less digits than its factorization.

71042402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224900.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 71042402 is about 8428.6654934218. The cubic root of 71042402 is about 414.1641899720.

Adding to 71042402 its reverse (20424017), we get a palindrome (91466419).

The spelling of 71042402 in words is "seventy-one million, forty-two thousand, four hundred two".