20412134 has 4 divisors (see below), whose sum is σ = 30618204. Its totient is φ = 10206066.

The previous prime is 20412113. The next prime is 20412149. The reversal of 20412134 is 43121402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43121402 = 2 ⋅21560701.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5103032 + ... + 5103035.

It is an arithmetic number, because the mean of its divisors is an integer number (7654551).

Almost surely, 2^20412134 is an apocalyptic number.

20412134 is a deficient number, since it is larger than the sum of its proper divisors (10206070).

20412134 is a wasteful number, since it uses less digits than its factorization.

20412134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10206069.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 20412134 is about 4517.9789729480. The cubic root of 20412134 is about 273.2936055024.

Adding to 20412134 its reverse (43121402), we get a palindrome (63533536).

The spelling of 20412134 in words is "twenty million, four hundred twelve thousand, one hundred thirty-four".