1235251212542 has 64 divisors (see below), whose sum is σ = 1975473100800. Its totient is φ = 578392738560.

The previous prime is 1235251212541. The next prime is 1235251212553. The reversal of 1235251212542 is 2452121525321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1235251212541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92059418 + ... + 92072834.

It is an arithmetic number, because the mean of its divisors is an integer number (30866767200).

Almost surely, 2^{1235251212542} is an apocalyptic number.

1235251212542 is a deficient number, since it is larger than the sum of its proper divisors (740221888258).

1235251212542 is a wasteful number, since it uses less digits than its factorization.

1235251212542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13881.

The product of its digits is 48000, while the sum is 35.

Adding to 1235251212542 its reverse (2452121525321), we get a palindrome (3687372737863).

The spelling of 1235251212542 in words is "one trillion, two hundred thirty-five billion, two hundred fifty-one million, two hundred twelve thousand, five hundred forty-two".