1542129946 has 16 divisors (see below), whose sum is σ = 2782791360. Its totient is φ = 626127840.

The previous prime is 1542129907. The next prime is 1542129947. The reversal of 1542129946 is 6499212451.

It is not an unprimeable number, because it can be changed into a prime (1542129947) 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, 2898475 + ... + 2899006.

It is an arithmetic number, because the mean of its divisors is an integer number (173924460).

Almost surely, 2^1542129946 is an apocalyptic number.

1542129946 is a deficient number, since it is larger than the sum of its proper divisors (1240661414).

1542129946 is a wasteful number, since it uses less digits than its factorization.

1542129946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5797509.

The product of its digits is 155520, while the sum is 43.

The square root of 1542129946 is about 39269.9623885738. The cubic root of 1542129946 is about 1155.3324994876.

The spelling of 1542129946 in words is "one billion, five hundred forty-two million, one hundred twenty-nine thousand, nine hundred forty-six".