20012402 has 4 divisors (see below), whose sum is σ = 30018606. Its totient is φ = 10006200.

The previous prime is 20012401. The next prime is 20012411. The reversal of 20012402 is 20421002.

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., 11895601 + 8116801 = 3449^2 + 2849^2 .

It is not an unprimeable number, because it can be changed into a prime (20012401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5003099 + ... + 5003102.

Almost surely, 2^20012402 is an apocalyptic number.

20012402 is a deficient number, since it is larger than the sum of its proper divisors (10006204).

20012402 is a wasteful number, since it uses less digits than its factorization.

20012402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10006203.

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

The square root of 20012402 is about 4473.5223258636. The cubic root of 20012402 is about 271.4978570783.

Adding to 20012402 its reverse (20421002), we get a palindrome (40433404).

The spelling of 20012402 in words is "twenty million, twelve thousand, four hundred two".