1540834747542 has 24 divisors (see below), whose sum is σ = 3428704349616. Its totient is φ = 499730188176.

The previous prime is 1540834747537. The next prime is 1540834747567. The reversal of 1540834747542 is 2457474380451.

1540834747542 is a `hidden beast` number, since 1 + 5 + 40 + 83 + 474 + 7 + 54 + 2 = 666.

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, 1156782178 + ... + 1156783509.

It is an arithmetic number, because the mean of its divisors is an integer number (142862681234).

Almost surely, 2^{1540834747542} is an apocalyptic number.

1540834747542 is an abundant number, since it is smaller than the sum of its proper divisors (1887869602074).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1540834747542 is a wasteful number, since it uses less digits than its factorization.

1540834747542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2313565732 (or 2313565729 counting only the distinct ones).

The product of its (nonzero) digits is 15052800, while the sum is 54.

The spelling of 1540834747542 in words is "one trillion, five hundred forty billion, eight hundred thirty-four million, seven hundred forty-seven thousand, five hundred forty-two".