902121002 has 4 divisors (see below), whose sum is σ = 1353181506. Its totient is φ = 451060500.

The previous prime is 902120993. The next prime is 902121023. The reversal of 902121002 is 200121209.

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., 876100801 + 26020201 = 29599^2 + 5101^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225530249 + ... + 225530252.

Almost surely, 2^902121002 is an apocalyptic number.

902121002 is a deficient number, since it is larger than the sum of its proper divisors (451060504).

902121002 is a wasteful number, since it uses less digits than its factorization.

902121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451060503.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 902121002 is about 30035.3292307576. The cubic root of 902121002 is about 966.2472358473.

The spelling of 902121002 in words is "nine hundred two million, one hundred twenty-one thousand, two".