1555250142 has 16 divisors (see below), whose sum is σ = 3110889600. Its totient is φ = 518351832.

The previous prime is 1555250093. The next prime is 1555250143. The reversal of 1555250142 is 2410525551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1555250143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76359 + ... + 94557.

It is an arithmetic number, because the mean of its divisors is an integer number (194430600).

Almost surely, 2^1555250142 is an apocalyptic number.

1555250142 is an abundant number, since it is smaller than the sum of its proper divisors (1555639458).

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

1555250142 is a wasteful number, since it uses less digits than its factorization.

1555250142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32447.

The product of its (nonzero) digits is 10000, while the sum is 30.

The square root of 1555250142 is about 39436.6598737773. The cubic root of 1555250142 is about 1158.5997129281.

Adding to 1555250142 its reverse (2410525551), we get a palindrome (3965775693).

The spelling of 1555250142 in words is "one billion, five hundred fifty-five million, two hundred fifty thousand, one hundred forty-two".