202171402 has 4 divisors (see below), whose sum is σ = 303257106. Its totient is φ = 101085700.

The previous prime is 202171339. The next prime is 202171439. The reversal of 202171402 is 204171202.

It is a happy number.

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., 149303961 + 52867441 = 12219^2 + 7271^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 202171402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50542849 + ... + 50542852.

Almost surely, 2^202171402 is an apocalyptic number.

202171402 is a deficient number, since it is larger than the sum of its proper divisors (101085704).

202171402 is a wasteful number, since it uses less digits than its factorization.

202171402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101085703.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 202171402 is about 14218.6990262823. The cubic root of 202171402 is about 586.9123402170.

The spelling of 202171402 in words is "two hundred two million, one hundred seventy-one thousand, four hundred two".