1253290 has 8 divisors (see below), whose sum is σ = 2255940. Its totient is φ = 501312.

The previous prime is 1253279. The next prime is 1253323. The reversal of 1253290 is 923521.

It can be written as a sum of positive squares in 2 ways, for example, as 1229881 + 23409 = 1109^2 + 153^2 .

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

It is a super-4 number, since 4×1253290⁴ (a number of 25 digits) contains 4444 as substring.

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, 62655 + ... + 62674.

2^1253290 is an apocalyptic number.

1253290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1253290 is a deficient number, since it is larger than the sum of its proper divisors (1002650).

1253290 is a wasteful number, since it uses less digits than its factorization.

1253290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125336.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 1253290 is about 1119.5043546141. The cubic root of 1253290 is about 107.8161595761.

The spelling of 1253290 in words is "one million, two hundred fifty-three thousand, two hundred ninety".