1553213142 has 48 divisors (see below), whose sum is σ = 3635770320. Its totient is φ = 476381376.

The previous prime is 1553213131. The next prime is 1553213219. The reversal of 1553213142 is 2413123551.

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, 63709 + ... + 84647.

It is an arithmetic number, because the mean of its divisors is an integer number (75745215).

Almost surely, 2^1553213142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1553213142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1817885160).

1553213142 is an abundant number, since it is smaller than the sum of its proper divisors (2082557178).

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

1553213142 is a wasteful number, since it uses less digits than its factorization.

1553213142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21277 (or 21274 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 1553213142 is about 39410.8251880115. The cubic root of 1553213142 is about 1158.0936638423.

Adding to 1553213142 its reverse (2413123551), we get a palindrome (3966336693).

The spelling of 1553213142 in words is "one billion, five hundred fifty-three million, two hundred thirteen thousand, one hundred forty-two".