1542302640 has 80 divisors (see below), whose sum is σ = 5312383200. Its totient is φ = 411280128.

The previous prime is 1542302639. The next prime is 1542302647. The reversal of 1542302640 is 462032451.

1542302640 is a `hidden beast` number, since 15 + 4 + 2 + 3 + 0 + 2 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1542302647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 354855 + ... + 359174.

It is an arithmetic number, because the mean of its divisors is an integer number (66404790).

Almost surely, 2^1542302640 is an apocalyptic number.

1542302640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1542302640 is an abundant number, since it is smaller than the sum of its proper divisors (3770080560).

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

1542302640 is a wasteful number, since it uses less digits than its factorization.

1542302640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714051 (or 714039 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 1542302640 is about 39272.1611322830. The cubic root of 1542302640 is about 1155.3756241595.

The spelling of 1542302640 in words is "one billion, five hundred forty-two million, three hundred two thousand, six hundred forty".