1253542 has 4 divisors (see below), whose sum is σ = 1880316. Its totient is φ = 626770.

The previous prime is 1253521. The next prime is 1253557. The reversal of 1253542 is 2453521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2453521 = 7 ⋅350503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313384 + ... + 313387.

It is an arithmetic number, because the mean of its divisors is an integer number (470079).

2^1253542 is an apocalyptic number.

1253542 is a deficient number, since it is larger than the sum of its proper divisors (626774).

1253542 is an equidigital number, since it uses as much as digits as its factorization.

1253542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626773.

The product of its digits is 1200, while the sum is 22.

The square root of 1253542 is about 1119.6168987649. The cubic root of 1253542 is about 107.8233853183.

The spelling of 1253542 in words is "one million, two hundred fifty-three thousand, five hundred forty-two".