1542280420 has 12 divisors (see below), whose sum is σ = 3238788924. Its totient is φ = 616912160.

The previous prime is 1542280393. The next prime is 1542280451. The reversal of 1542280420 is 240822451.

It can be written as a sum of positive squares in 2 ways, for example, as 649944036 + 892336384 = 25494^2 + 29872^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38556991 + ... + 38557030.

It is an arithmetic number, because the mean of its divisors is an integer number (269899077).

Almost surely, 2^1542280420 is an apocalyptic number.

1542280420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1542280420 is an abundant number, since it is smaller than the sum of its proper divisors (1696508504).

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

1542280420 is a wasteful number, since it uses less digits than its factorization.

1542280420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77114030 (or 77114028 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 1542280420 is about 39271.8782336674. The cubic root of 1542280420 is about 1155.3700756225.

The spelling of 1542280420 in words is "one billion, five hundred forty-two million, two hundred eighty thousand, four hundred twenty".