1245355121542 has 16 divisors (see below), whose sum is σ = 2136847763232. Its totient is φ = 533235306240.

The previous prime is 1245355121533. The next prime is 1245355121579. The reversal of 1245355121542 is 2451215535421.

It is a junction number, because it is equal to n+sod(n) for n = 1245355121495 and 1245355121504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40677259 + ... + 40707862.

It is an arithmetic number, because the mean of its divisors is an integer number (133552985202).

Almost surely, 2^{1245355121542} is an apocalyptic number.

1245355121542 is a deficient number, since it is larger than the sum of its proper divisors (891492641690).

1245355121542 is a wasteful number, since it uses less digits than its factorization.

1245355121542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81386223.

The product of its digits is 240000, while the sum is 40.

The spelling of 1245355121542 in words is "one trillion, two hundred forty-five billion, three hundred fifty-five million, one hundred twenty-one thousand, five hundred forty-two".