1542542390 has 16 divisors (see below), whose sum is σ = 2792629008. Its totient is φ = 613449696.

The previous prime is 1542542383. The next prime is 1542542401. The reversal of 1542542390 is 932452451.

It is a self number, because there is not a number n which added to its sum of digits gives 1542542390.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 444092 + ... + 447551.

It is an arithmetic number, because the mean of its divisors is an integer number (174539313).

Almost surely, 2^1542542390 is an apocalyptic number.

1542542390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1542542390 is a deficient number, since it is larger than the sum of its proper divisors (1250086618).

1542542390 is a wasteful number, since it uses less digits than its factorization.

1542542390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891823.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 1542542390 is about 39275.2134303558. The cubic root of 1542542390 is about 1155.4354885351.

The spelling of 1542542390 in words is "one billion, five hundred forty-two million, five hundred forty-two thousand, three hundred ninety".