12012402142 has 64 divisors (see below), whose sum is σ = 20631252096. Its totient is φ = 5203630080.

The previous prime is 12012402107. The next prime is 12012402163. The reversal of 12012402142 is 24120421021.

It is a super-2 number, since 2×12012402142² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10170792 + ... + 10171972.

It is an arithmetic number, because the mean of its divisors is an integer number (322363314).

Almost surely, 2^12012402142 is an apocalyptic number.

12012402142 is a deficient number, since it is larger than the sum of its proper divisors (8618849954).

12012402142 is a wasteful number, since it uses less digits than its factorization.

12012402142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1525.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 12012402142 its reverse (24120421021), we get a palindrome (36132823163).

The spelling of 12012402142 in words is "twelve billion, twelve million, four hundred two thousand, one hundred forty-two".