1542664141 has 4 divisors (see below), whose sum is σ = 1543333984. Its totient is φ = 1541994300.

The previous prime is 1542664139. The next prime is 1542664147. The reversal of 1542664141 is 1414662451.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1542664141 - 2¹ = 1542664139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1542664097 and 1542664106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542664147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331455 + ... + 336076.

It is an arithmetic number, because the mean of its divisors is an integer number (385833496).

Almost surely, 2^1542664141 is an apocalyptic number.

It is an amenable number.

1542664141 is a deficient number, since it is larger than the sum of its proper divisors (669843).

1542664141 is an equidigital number, since it uses as much as digits as its factorization.

1542664141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669842.

The product of its digits is 23040, while the sum is 34.

The square root of 1542664141 is about 39276.7633722536. The cubic root of 1542664141 is about 1155.4658867760.

The spelling of 1542664141 in words is "one billion, five hundred forty-two million, six hundred sixty-four thousand, one hundred forty-one".