2120402 has 4 divisors (see below), whose sum is σ = 3180606. Its totient is φ = 1060200.

The previous prime is 2120387. The next prime is 2120411. The reversal of 2120402 is 2040212.

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., 1510441 + 609961 = 1229^2 + 781^2 .

It is a super-2 number, since 2×2120402² = 8992209283208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530099 + ... + 530102.

2^2120402 is an apocalyptic number.

2120402 is a deficient number, since it is larger than the sum of its proper divisors (1060204).

2120402 is a wasteful number, since it uses less digits than its factorization.

2120402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060203.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 2120402 is about 1456.1600186793. The cubic root of 2120402 is about 128.4712850997.

Adding to 2120402 its reverse (2040212), we get a palindrome (4160614).

The spelling of 2120402 in words is "two million, one hundred twenty thousand, four hundred two".