1542691042 has 8 divisors (see below), whose sum is σ = 2345735916. Its totient is φ = 760779072.

The previous prime is 1542691039. The next prime is 1542691063. The reversal of 1542691042 is 2401962451.

It can be written as a sum of positive squares in 2 ways, for example, as 1528106281 + 14584761 = 39091^2 + 3819^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1542690989 and 1542691007.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5283043 + ... + 5283334.

Almost surely, 2^1542691042 is an apocalyptic number.

1542691042 is a deficient number, since it is larger than the sum of its proper divisors (803044874).

1542691042 is a wasteful number, since it uses less digits than its factorization.

1542691042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10566452.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 1542691042 is about 39277.1058251496. The cubic root of 1542691042 is about 1155.4726030806.

The spelling of 1542691042 in words is "one billion, five hundred forty-two million, six hundred ninety-one thousand, forty-two".