402254522 has 4 divisors (see below), whose sum is σ = 603381786. Its totient is φ = 201127260.

The previous prime is 402254509. The next prime is 402254537. The reversal of 402254522 is 225452204.

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., 399160441 + 3094081 = 19979^2 + 1759^2 .

It is a junction number, because it is equal to n+sod(n) for n = 402254491 and 402254500.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100563629 + ... + 100563632.

Almost surely, 2^402254522 is an apocalyptic number.

402254522 is a deficient number, since it is larger than the sum of its proper divisors (201127264).

402254522 is a wasteful number, since it uses less digits than its factorization.

402254522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201127263.

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 402254522 is about 20056.2838531967. The cubic root of 402254522 is about 738.1879954279.

The spelling of 402254522 in words is "four hundred two million, two hundred fifty-four thousand, five hundred twenty-two".