20942039 has 8 divisors (see below), whose sum is σ = 21194880. Its totient is φ = 20691000.

The previous prime is 20942023. The next prime is 20942041. The reversal of 20942039 is 93024902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20942039 - 2⁴ = 20942023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20942069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49772 + ... + 50190.

It is an arithmetic number, because the mean of its divisors is an integer number (2649360).

Almost surely, 2^20942039 is an apocalyptic number.

20942039 is a deficient number, since it is larger than the sum of its proper divisors (252841).

20942039 is a wasteful number, since it uses less digits than its factorization.

20942039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 20942039 is about 4576.2472616763. The cubic root of 20942039 is about 275.6383583525.

The spelling of 20942039 in words is "twenty million, nine hundred forty-two thousand, thirty-nine".