1542694942 has 8 divisors (see below), whose sum is σ = 2315390616. Its totient is φ = 770898072.

The previous prime is 1542694921. The next prime is 1542694969. The reversal of 1542694942 is 2494962451.

It is a happy number.

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 = 1542694892 and 1542694901.

It is a congruent number.

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, 220393 + ... + 227284.

It is an arithmetic number, because the mean of its divisors is an integer number (289423827).

Almost surely, 2^1542694942 is an apocalyptic number.

1542694942 is a deficient number, since it is larger than the sum of its proper divisors (772695674).

1542694942 is a wasteful number, since it uses less digits than its factorization.

1542694942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449402.

The product of its digits is 622080, while the sum is 46.

The square root of 1542694942 is about 39277.1554723608. The cubic root of 1542694942 is about 1155.4735767773.

The spelling of 1542694942 in words is "one billion, five hundred forty-two million, six hundred ninety-four thousand, nine hundred forty-two".