1142538941621 has 16 divisors (see below), whose sum is σ = 1470414594048. Its totient is φ = 861571047600.

The previous prime is 1142538941597. The next prime is 1142538941641. The reversal of 1142538941621 is 1261498352411.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1142538941621 is a prime.

It is a super-2 number, since 2×1142538941621² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142538941641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 239322905 + ... + 239327678.

It is an arithmetic number, because the mean of its divisors is an integer number (91900912128).

Almost surely, 2^{1142538941621} is an apocalyptic number.

1142538941621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1142538941621 is a deficient number, since it is larger than the sum of its proper divisors (327875652427).

1142538941621 is a wasteful number, since it uses less digits than its factorization.

1142538941621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478650632.

The product of its digits is 414720, while the sum is 47.

The spelling of 1142538941621 in words is "one trillion, one hundred forty-two billion, five hundred thirty-eight million, nine hundred forty-one thousand, six hundred twenty-one".