1542438855 has 24 divisors (see below), whose sum is σ = 2772583632. Its totient is φ = 822633408.

The previous prime is 1542438847. The next prime is 1542438899. The reversal of 1542438855 is 5588342451.

It is not a de Polignac number, because 1542438855 - 2³ = 1542438847 is a prime.

It is a super-2 number, since 2×1542438855² = 4758235242827422050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1542438855.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 633534 + ... + 635963.

It is an arithmetic number, because the mean of its divisors is an integer number (115524318).

Almost surely, 2^1542438855 is an apocalyptic number.

1542438855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1542438855 is a deficient number, since it is larger than the sum of its proper divisors (1230144777).

1542438855 is an equidigital number, since it uses as much as digits as its factorization.

1542438855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269517 (or 1269505 counting only the distinct ones).

The product of its digits is 768000, while the sum is 45.

The square root of 1542438855 is about 39273.8953377431. The cubic root of 1542438855 is about 1155.4096371246.

The spelling of 1542438855 in words is "one billion, five hundred forty-two million, four hundred thirty-eight thousand, eight hundred fifty-five".