1252742 has 8 divisors (see below), whose sum is σ = 1944000. Its totient is φ = 604744.

The previous prime is 1252739. The next prime is 1252751. The reversal of 1252742 is 2472521.

It is a happy number.

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

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10742 + ... + 10857.

It is an arithmetic number, because the mean of its divisors is an integer number (243000).

2^1252742 is an apocalyptic number.

1252742 is a deficient number, since it is larger than the sum of its proper divisors (691258).

1252742 is a wasteful number, since it uses less digits than its factorization.

1252742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21630.

The product of its digits is 1120, while the sum is 23.

The square root of 1252742 is about 1119.2595766845. The cubic root of 1252742 is about 107.8004431102.

The spelling of 1252742 in words is "one million, two hundred fifty-two thousand, seven hundred forty-two".