1542125321 has 16 divisors (see below), whose sum is σ = 1756909440. Its totient is φ = 1339873920.

The previous prime is 1542125317. The next prime is 1542125363. The reversal of 1542125321 is 1235212451.

It is not a de Polignac number, because 1542125321 - 2² = 1542125317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1542125311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 517925 + ... + 520893.

It is an arithmetic number, because the mean of its divisors is an integer number (109806840).

Almost surely, 2^1542125321 is an apocalyptic number.

1542125321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1542125321 is a deficient number, since it is larger than the sum of its proper divisors (214784119).

1542125321 is a wasteful number, since it uses less digits than its factorization.

1542125321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5056.

The product of its digits is 2400, while the sum is 26.

The square root of 1542125321 is about 39269.9035012820. The cubic root of 1542125321 is about 1155.3313445011.

Adding to 1542125321 its reverse (1235212451), we get a palindrome (2777337772).

The spelling of 1542125321 in words is "one billion, five hundred forty-two million, one hundred twenty-five thousand, three hundred twenty-one".