1252143562 has 8 divisors (see below), whose sum is σ = 1879946496. Its totient is φ = 625494732.

The previous prime is 1252143559. The next prime is 1252143569. The reversal of 1252143562 is 2653412521.

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

It is not an unprimeable number, because it can be changed into a prime (1252143569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285808 + ... + 290155.

It is an arithmetic number, because the mean of its divisors is an integer number (234993312).

Almost surely, 2^1252143562 is an apocalyptic number.

1252143562 is a deficient number, since it is larger than the sum of its proper divisors (627802934).

1252143562 is a wasteful number, since it uses less digits than its factorization.

1252143562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577052.

The product of its digits is 14400, while the sum is 31.

The square root of 1252143562 is about 35385.6406187595. The cubic root of 1252143562 is about 1077.8327486194.

The spelling of 1252143562 in words is "one billion, two hundred fifty-two million, one hundred forty-three thousand, five hundred sixty-two".