1542051449 has 8 divisors (see below), whose sum is σ = 1569982920. Its totient is φ = 1514370816.

The previous prime is 1542051443. The next prime is 1542051461. The reversal of 1542051449 is 9441502451.

It can be written as a sum of positive squares in 4 ways, for example, as 75625 + 1541975824 = 275^2 + 39268^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1542051449 - 2²⁰ = 1541002873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1542051443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50282 + ... + 74915.

It is an arithmetic number, because the mean of its divisors is an integer number (196247865).

Almost surely, 2^1542051449 is an apocalyptic number.

It is an amenable number.

1542051449 is a deficient number, since it is larger than the sum of its proper divisors (27931471).

1542051449 is a wasteful number, since it uses less digits than its factorization.

1542051449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125419.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 1542051449 is about 39268.9629223895. The cubic root of 1542051449 is about 1155.3128963679.

The spelling of 1542051449 in words is "one billion, five hundred forty-two million, fifty-one thousand, four hundred forty-nine".