1542740071 has 4 divisors (see below), whose sum is σ = 1556392752. Its totient is φ = 1529087392.

The previous prime is 1542740063. The next prime is 1542740107. The reversal of 1542740071 is 1700472451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1700472451 = 223 ⋅7625437.

It is a cyclic number.

It is not a de Polignac number, because 1542740071 - 2³ = 1542740063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542740041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6826171 + ... + 6826396.

It is an arithmetic number, because the mean of its divisors is an integer number (389098188).

Almost surely, 2^1542740071 is an apocalyptic number.

1542740071 is a deficient number, since it is larger than the sum of its proper divisors (13652681).

1542740071 is a wasteful number, since it uses less digits than its factorization.

1542740071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13652680.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 1542740071 is about 39277.7299624100. The cubic root of 1542740071 is about 1155.4848438263.

The spelling of 1542740071 in words is "one billion, five hundred forty-two million, seven hundred forty thousand, seventy-one".