1251942 has 8 divisors (see below), whose sum is σ = 2503896. Its totient is φ = 417312.

The previous prime is 1251937. The next prime is 1251947. The reversal of 1251942 is 2491521.

It is an interprime number because it is at equal distance from previous prime (1251937) and next prime (1251947).

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

1251942 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104323 + ... + 104334.

It is an arithmetic number, because the mean of its divisors is an integer number (312987).

2^1251942 is an apocalyptic number.

1251942 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1251942 is a wasteful number, since it uses less digits than its factorization.

1251942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208662.

The product of its digits is 720, while the sum is 24.

The square root of 1251942 is about 1118.9021404931. The cubic root of 1251942 is about 107.7774911326. Note that the first 3 decimals are identical.

It can be divided in two parts, 12519 and 42, that added together give a triangular number (12561 = T₁₅₈).

The spelling of 1251942 in words is "one million, two hundred fifty-one thousand, nine hundred forty-two".