1252140 has 48 divisors (see below), whose sum is σ = 3598560. Its totient is φ = 325120.

The previous prime is 1252129. The next prime is 1252151. The reversal of 1252140 is 412521.

It is an interprime number because it is at equal distance from previous prime (1252129) and next prime (1252151).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2206 + ... + 2714.

It is an arithmetic number, because the mean of its divisors is an integer number (74970).

2^1252140 is an apocalyptic number.

1252140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1252140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1799280).

1252140 is an abundant number, since it is smaller than the sum of its proper divisors (2346420).

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

1252140 is a wasteful number, since it uses less digits than its factorization.

1252140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562 (or 560 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1252140 is about 1118.9906165826. The cubic root of 1252140 is about 107.7831726574.

Adding to 1252140 its reverse (412521), we get a palindrome (1664661).

It can be divided in two parts, 12521 and 40, that added together give a triangular number (12561 = T₁₅₈).

The spelling of 1252140 in words is "one million, two hundred fifty-two thousand, one hundred forty".