1551257740142 has 24 divisors (see below), whose sum is σ = 2692265507400. Its totient is φ = 668005723440.

The previous prime is 1551257740127. The next prime is 1551257740163. The reversal of 1551257740142 is 2410477521551.

It is a junction number, because it is equal to n+sod(n) for n = 1551257740093 and 1551257740102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168683717 + ... + 168692912.

It is an arithmetic number, because the mean of its divisors is an integer number (112177729475).

Almost surely, 2^{1551257740142} is an apocalyptic number.

1551257740142 is a deficient number, since it is larger than the sum of its proper divisors (1141007767258).

1551257740142 is a wasteful number, since it uses less digits than its factorization.

1551257740142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337376672 (or 337376661 counting only the distinct ones).

The product of its (nonzero) digits is 392000, while the sum is 44.

The spelling of 1551257740142 in words is "one trillion, five hundred fifty-one billion, two hundred fifty-seven million, seven hundred forty thousand, one hundred forty-two".