1253121342 has 32 divisors (see below), whose sum is σ = 2761167744. Its totient is φ = 375972000.

The previous prime is 1253121329. The next prime is 1253121361. The reversal of 1253121342 is 2431213521.

1253121342 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87328 + ... + 100659.

It is an arithmetic number, because the mean of its divisors is an integer number (86286492).

Almost surely, 2^1253121342 is an apocalyptic number.

1253121342 is an abundant number, since it is smaller than the sum of its proper divisors (1508046402).

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

1253121342 is a wasteful number, since it uses less digits than its factorization.

1253121342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188104.

The product of its digits is 1440, while the sum is 24.

The square root of 1253121342 is about 35399.4539788398. The cubic root of 1253121342 is about 1078.1132300635.

Adding to 1253121342 its reverse (2431213521), we get a palindrome (3684334863).

The spelling of 1253121342 in words is "one billion, two hundred fifty-three million, one hundred twenty-one thousand, three hundred forty-two".