202021442 has 32 divisors (see below), whose sum is σ = 350784000. Its totient is φ = 85474368.

The previous prime is 202021429. The next prime is 202021493. The reversal of 202021442 is 244120202.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 202021442.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 578684 + ... + 579032.

It is an arithmetic number, because the mean of its divisors is an integer number (10962000).

Almost surely, 2^202021442 is an apocalyptic number.

202021442 is a deficient number, since it is larger than the sum of its proper divisors (148762558).

202021442 is a wasteful number, since it uses less digits than its factorization.

202021442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 202021442 is about 14213.4247104630. The cubic root of 202021442 is about 586.7671908638.

Adding to 202021442 its reverse (244120202), we get a palindrome (446141644).

The spelling of 202021442 in words is "two hundred two million, twenty-one thousand, four hundred forty-two".