1542400387 has 8 divisors (see below), whose sum is σ = 1684892160. Its totient is φ = 1400287560.

The previous prime is 1542400331. The next prime is 1542400403. The reversal of 1542400387 is 7830042451.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1542400387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1542400087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86187 + ... + 102532.

It is an arithmetic number, because the mean of its divisors is an integer number (210611520).

Almost surely, 2^1542400387 is an apocalyptic number.

1542400387 is a deficient number, since it is larger than the sum of its proper divisors (142491773).

1542400387 is a wasteful number, since it uses less digits than its factorization.

1542400387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189473.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 1542400387 is about 39273.4055946260. The cubic root of 1542400387 is about 1155.4000318454.

The spelling of 1542400387 in words is "one billion, five hundred forty-two million, four hundred thousand, three hundred eighty-seven".