20683042 has 4 divisors (see below), whose sum is σ = 31024566. Its totient is φ = 10341520.

The previous prime is 20683031. The next prime is 20683057. The reversal of 20683042 is 24038602.

It is a happy number.

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., 13980121 + 6702921 = 3739^2 + 2589^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20682998 and 20683016.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5170759 + ... + 5170762.

Almost surely, 2^20683042 is an apocalyptic number.

20683042 is a deficient number, since it is larger than the sum of its proper divisors (10341524).

20683042 is a wasteful number, since it uses less digits than its factorization.

20683042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10341523.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 20683042 is about 4547.8612555794. The cubic root of 20683042 is about 274.4973385143.

The spelling of 20683042 in words is "twenty million, six hundred eighty-three thousand, forty-two".