1542144121 has 16 divisors (see below), whose sum is σ = 1816998400. Its totient is φ = 1308182400.

The previous prime is 1542144113. The next prime is 1542144133. The reversal of 1542144121 is 1214412451.

It is not a de Polignac number, because 1542144121 - 2³ = 1542144113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1542144221) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 10096 + ... + 56446.

It is an arithmetic number, because the mean of its divisors is an integer number (113562400).

Almost surely, 2^1542144121 is an apocalyptic number.

It is an amenable number.

1542144121 is a deficient number, since it is larger than the sum of its proper divisors (274854279).

1542144121 is an frugal number, since it uses more digits than its factorization.

1542144121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46469 (or 46455 counting only the distinct ones).

The product of its digits is 1280, while the sum is 25.

The square root of 1542144121 is about 39270.1428696153. The cubic root of 1542144121 is about 1155.3360393510.

Adding to 1542144121 its reverse (1214412451), we get a palindrome (2756556572).

The spelling of 1542144121 in words is "one billion, five hundred forty-two million, one hundred forty-four thousand, one hundred twenty-one".