1540754742 has 8 divisors (see below), whose sum is σ = 3081509496. Its totient is φ = 513584912.

The previous prime is 1540754737. The next prime is 1540754749. The reversal of 1540754742 is 2474570451.

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

1540754742 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 1540754742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540754749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128396223 + ... + 128396234.

It is an arithmetic number, because the mean of its divisors is an integer number (385188687).

Almost surely, 2^1540754742 is an apocalyptic number.

1540754742 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1540754742 is a wasteful number, since it uses less digits than its factorization.

1540754742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256792462.

The product of its (nonzero) digits is 156800, while the sum is 39.

The square root of 1540754742 is about 39252.4488662809. The cubic root of 1540754742 is about 1154.9889723652.

The spelling of 1540754742 in words is "one billion, five hundred forty million, seven hundred fifty-four thousand, seven hundred forty-two".