1542401279 has 16 divisors (see below), whose sum is σ = 1692861120. Its totient is φ = 1398781440.

The previous prime is 1542401257. The next prime is 1542401291. The reversal of 1542401279 is 9721042451.

It is a cyclic number.

It is not a de Polignac number, because 1542401279 - 2¹² = 1542397183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542401219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 263822 + ... + 269604.

It is an arithmetic number, because the mean of its divisors is an integer number (105803820).

Almost surely, 2^1542401279 is an apocalyptic number.

1542401279 is a deficient number, since it is larger than the sum of its proper divisors (150459841).

1542401279 is a wasteful number, since it uses less digits than its factorization.

1542401279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6370.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 1542401279 is about 39273.4169509097. The cubic root of 1542401279 is about 1155.4002545754.

The spelling of 1542401279 in words is "one billion, five hundred forty-two million, four hundred one thousand, two hundred seventy-nine".