1542945722 has 8 divisors (see below), whose sum is σ = 2327205972. Its totient is φ = 767210400.

The previous prime is 1542945713. The next prime is 1542945779. The reversal of 1542945722 is 2275492451.

It can be written as a sum of positive squares in 2 ways, for example, as 1501485001 + 41460721 = 38749^2 + 6439^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1542945722.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2130779 + ... + 2131502.

Almost surely, 2^1542945722 is an apocalyptic number.

1542945722 is a deficient number, since it is larger than the sum of its proper divisors (784260250).

1542945722 is a wasteful number, since it uses less digits than its factorization.

1542945722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4262464.

The product of its digits is 201600, while the sum is 41.

The square root of 1542945722 is about 39280.3477835928. The cubic root of 1542945722 is about 1155.5361845242.

The spelling of 1542945722 in words is "one billion, five hundred forty-two million, nine hundred forty-five thousand, seven hundred twenty-two".