1542401280 has 432 divisors, whose sum is σ = 6305854464. Its totient is φ = 340623360.

The previous prime is 1542401257. The next prime is 1542401291. The reversal of 1542401280 is 821042451.

1542401280 is a `hidden beast` number, since 1 + 542 + 40 + 1 + 2 + 80 = 666.

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, 2499532 + ... + 2500148.

Almost surely, 2^1542401280 is an apocalyptic number.

1542401280 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 1542401280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3152927232).

1542401280 is an abundant number, since it is smaller than the sum of its proper divisors (4763453184).

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

1542401280 is a wasteful number, since it uses less digits than its factorization.

1542401280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682 (or 665 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 1542401280 is about 39273.4169636409. The cubic root of 1542401280 is about 1155.4002548251.

The spelling of 1542401280 in words is "one billion, five hundred forty-two million, four hundred one thousand, two hundred eighty".