1252290 has 64 divisors (see below), whose sum is σ = 3427200. Its totient is φ = 292032.

The previous prime is 1252283. The next prime is 1252331. The reversal of 1252290 is 922521.

1252290 = T₂₅ + T₂₆ + ... + T₁₉₅.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65901 + ... + 65919.

It is an arithmetic number, because the mean of its divisors is an integer number (53550).

2^1252290 is an apocalyptic number.

1252290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1252290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1713600).

1252290 is an abundant number, since it is smaller than the sum of its proper divisors (2174910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1252290 is a wasteful number, since it uses less digits than its factorization.

1252290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68 (or 42 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1252290 is about 1119.0576392662. The cubic root of 1252290 is about 107.7874764440.

It can be divided in two parts, 125 and 2290, that added together give a triangular number (2415 = T₆₉).

The spelling of 1252290 in words is "one million, two hundred fifty-two thousand, two hundred ninety".