1555142234 has 8 divisors (see below), whose sum is σ = 2341015668. Its totient is φ = 774803680.

The previous prime is 1555142221. The next prime is 1555142291. The reversal of 1555142234 is 4322415551.

It can be written as a sum of positive squares in 2 ways, for example, as 1544883025 + 10259209 = 39305^2 + 3203^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1555142234.

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, 1383017 + ... + 1384140.

Almost surely, 2^1555142234 is an apocalyptic number.

1555142234 is a deficient number, since it is larger than the sum of its proper divisors (785873434).

1555142234 is a wasteful number, since it uses less digits than its factorization.

1555142234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2767440.

The product of its digits is 24000, while the sum is 32.

The square root of 1555142234 is about 39435.2917321528. The cubic root of 1555142234 is about 1158.5729165807.

Adding to 1555142234 its reverse (4322415551), we get a palindrome (5877557785).

The spelling of 1555142234 in words is "one billion, five hundred fifty-five million, one hundred forty-two thousand, two hundred thirty-four".