1252847542 has 8 divisors (see below), whose sum is σ = 1881297000. Its totient is φ = 625748544.

The previous prime is 1252847483. The next prime is 1252847543. The reversal of 1252847542 is 2457482521.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 1252847495 and 1252847504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252847543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335292 + ... + 339007.

It is an arithmetic number, because the mean of its divisors is an integer number (235162125).

Almost surely, 2^1252847542 is an apocalyptic number.

1252847542 is a deficient number, since it is larger than the sum of its proper divisors (628449458).

1252847542 is an equidigital number, since it uses as much as digits as its factorization.

1252847542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675230.

The product of its digits is 179200, while the sum is 40.

The square root of 1252847542 is about 35395.5864762826. The cubic root of 1252847542 is about 1078.0347037750.

The spelling of 1252847542 in words is "one billion, two hundred fifty-two million, eight hundred forty-seven thousand, five hundred forty-two".