20412244142 has 4 divisors (see below), whose sum is σ = 30618366216. Its totient is φ = 10206122070.

The previous prime is 20412244129. The next prime is 20412244157. The reversal of 20412244142 is 24144221402.

It is a happy number.

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

It is a super-2 number, since 2×20412244142² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5103061034 + ... + 5103061037.

It is an arithmetic number, because the mean of its divisors is an integer number (7654591554).

Almost surely, 2^20412244142 is an apocalyptic number.

20412244142 is a deficient number, since it is larger than the sum of its proper divisors (10206122074).

20412244142 is a wasteful number, since it uses less digits than its factorization.

20412244142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10206122073.

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 20412244142 its reverse (24144221402), we get a palindrome (44556465544).

The spelling of 20412244142 in words is "twenty billion, four hundred twelve million, two hundred forty-four thousand, one hundred forty-two".