1553774142 has 16 divisors (see below), whose sum is σ = 3115541520. Its totient is φ = 516592512.

The previous prime is 1553774141. The next prime is 1553774149. The reversal of 1553774142 is 2414773551.

It is a self number, because there is not a number n which added to its sum of digits gives 1553774142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1553774141) 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, 330523 + ... + 335190.

It is an arithmetic number, because the mean of its divisors is an integer number (194721345).

Almost surely, 2^1553774142 is an apocalyptic number.

1553774142 is an abundant number, since it is smaller than the sum of its proper divisors (1561767378).

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

1553774142 is a wasteful number, since it uses less digits than its factorization.

1553774142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666107.

The product of its digits is 117600, while the sum is 39.

The square root of 1553774142 is about 39417.9418793016. The cubic root of 1553774142 is about 1158.2330764196.

The spelling of 1553774142 in words is "one billion, five hundred fifty-three million, seven hundred seventy-four thousand, one hundred forty-two".