1542747142 has 8 divisors (see below), whose sum is σ = 2435916600. Its totient is φ = 730774944.

The previous prime is 1542747137. The next prime is 1542747197. The reversal of 1542747142 is 2417472451.

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

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, 20299267 + ... + 20299342.

It is an arithmetic number, because the mean of its divisors is an integer number (304489575).

Almost surely, 2^1542747142 is an apocalyptic number.

1542747142 is a deficient number, since it is larger than the sum of its proper divisors (893169458).

1542747142 is a wasteful number, since it uses less digits than its factorization.

1542747142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40598630.

The product of its digits is 62720, while the sum is 37.

The square root of 1542747142 is about 39277.8199751463. The cubic root of 1542747142 is about 1155.4866091747.

The spelling of 1542747142 in words is "one billion, five hundred forty-two million, seven hundred forty-seven thousand, one hundred forty-two".