20460142 has 4 divisors (see below), whose sum is σ = 30690216. Its totient is φ = 10230070.

The previous prime is 20460091. The next prime is 20460151. The reversal of 20460142 is 24106402.

It is a semiprime because it is the product of two primes.

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, 5115034 + ... + 5115037.

It is an arithmetic number, because the mean of its divisors is an integer number (7672554).

Almost surely, 2^20460142 is an apocalyptic number.

20460142 is a deficient number, since it is larger than the sum of its proper divisors (10230074).

20460142 is a wasteful number, since it uses less digits than its factorization.

20460142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10230073.

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

The square root of 20460142 is about 4523.2888477302. The cubic root of 20460142 is about 273.5076939594.

Adding to 20460142 its reverse (24106402), we get a palindrome (44566544).

It can be divided in two parts, 20460 and 142, that added together give a palindrome (20602).

The spelling of 20460142 in words is "twenty million, four hundred sixty thousand, one hundred forty-two".