1521498139942 has 12 divisors (see below), whose sum is σ = 2489733696348. Its totient is φ = 691587433800.

The previous prime is 1521498139937. The next prime is 1521498139951. The reversal of 1521498139942 is 2499318941251.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5654092 + ... + 5917072.

It is an arithmetic number, because the mean of its divisors is an integer number (207477808029).

Almost surely, 2^{1521498139942} is an apocalyptic number.

1521498139942 is a deficient number, since it is larger than the sum of its proper divisors (968235556406).

1521498139942 is an frugal number, since it uses more digits than its factorization.

1521498139942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525975 (or 262994 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 58.

The spelling of 1521498139942 in words is "one trillion, five hundred twenty-one billion, four hundred ninety-eight million, one hundred thirty-nine thousand, nine hundred forty-two".