1542442680 has 192 divisors, whose sum is σ = 5270110560. Its totient is φ = 390749184.

The previous prime is 1542442679. The next prime is 1542442703. The reversal of 1542442680 is 862442451.

1542442680 is a `hidden beast` number, since 154 + 2 + 4 + 426 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 571414 + ... + 574106.

Almost surely, 2^1542442680 is an apocalyptic number.

1542442680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1542442680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2635055280).

1542442680 is an abundant number, since it is smaller than the sum of its proper divisors (3727667880).

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

1542442680 is a wasteful number, since it uses less digits than its factorization.

1542442680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2790 (or 2783 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

The square root of 1542442680 is about 39273.9440341812. The cubic root of 1542442680 is about 1155.4105922004.

The spelling of 1542442680 in words is "one billion, five hundred forty-two million, four hundred forty-two thousand, six hundred eighty".