1542240420 has 96 divisors (see below), whose sum is σ = 5055595776. Its totient is φ = 343910400.

The previous prime is 1542240389. The next prime is 1542240437. The reversal of 1542240420 is 240422451.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27561 + ... + 62000.

It is an arithmetic number, because the mean of its divisors is an integer number (52662456).

Almost surely, 2^1542240420 is an apocalyptic number.

1542240420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1542240420 is an abundant number, since it is smaller than the sum of its proper divisors (3513355356).

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

1542240420 is a wasteful number, since it uses less digits than its factorization.

1542240420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89621 (or 89619 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 1542240420 is about 39271.3689600961. The cubic root of 1542240420 is about 1155.3600871228.

Adding to 1542240420 its reverse (240422451), we get a palindrome (1782662871).

The spelling of 1542240420 in words is "one billion, five hundred forty-two million, two hundred forty thousand, four hundred twenty".