20542034 has 16 divisors (see below), whose sum is σ = 32103000. Its totient is φ = 9846144.

The previous prime is 20542009. The next prime is 20542051. The reversal of 20542034 is 43024502.

It can be written as a sum of positive squares in 4 ways, for example, as 12996025 + 7546009 = 3605^2 + 2747^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20541997 and 20542015.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7454 + ... + 9830.

Almost surely, 2^20542034 is an apocalyptic number.

20542034 is a deficient number, since it is larger than the sum of its proper divisors (11560966).

20542034 is a wasteful number, since it uses less digits than its factorization.

20542034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2557.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 20542034 is about 4532.3320707998. The cubic root of 20542034 is about 273.8721142952.

Adding to 20542034 its reverse (43024502), we get a palindrome (63566536).

The spelling of 20542034 in words is "twenty million, five hundred forty-two thousand, thirty-four".