20604142 has 24 divisors (see below), whose sum is σ = 34204896. Its totient is φ = 9300096.

The previous prime is 20604139. The next prime is 20604149. The reversal of 20604142 is 24140602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20604149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15238 + ... + 16534.

It is an arithmetic number, because the mean of its divisors is an integer number (1425204).

Almost surely, 2^20604142 is an apocalyptic number.

20604142 is a deficient number, since it is larger than the sum of its proper divisors (13600754).

20604142 is a wasteful number, since it uses less digits than its factorization.

20604142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372 (or 1359 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 20604142 is about 4539.1785600481. The cubic root of 20604142 is about 274.1478503032.

Adding to 20604142 its reverse (24140602), we get a palindrome (44744744).

The spelling of 20604142 in words is "twenty million, six hundred four thousand, one hundred forty-two".