1231501200142 has 32 divisors (see below), whose sum is σ = 1916928544608. Its totient is φ = 592936920576.

The previous prime is 1231501200121. The next prime is 1231501200151. The reversal of 1231501200142 is 2410021051321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14982268 + ... + 15064240.

It is an arithmetic number, because the mean of its divisors is an integer number (59904017019).

Almost surely, 2^{1231501200142} is an apocalyptic number.

1231501200142 is a deficient number, since it is larger than the sum of its proper divisors (685427344466).

1231501200142 is a wasteful number, since it uses less digits than its factorization.

1231501200142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84484.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 1231501200142 its reverse (2410021051321), we get a palindrome (3641522251463).

The spelling of 1231501200142 in words is "one trillion, two hundred thirty-one billion, five hundred one million, two hundred thousand, one hundred forty-two".