1237942 has 4 divisors (see below), whose sum is σ = 1856916. Its totient is φ = 618970.

The previous prime is 1237939. The next prime is 1237949. The reversal of 1237942 is 2497321.

It is a semiprime because it is the product of two primes.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1237942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1237949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309484 + ... + 309487.

It is an arithmetic number, because the mean of its divisors is an integer number (464229).

2^1237942 is an apocalyptic number.

1237942 is a deficient number, since it is larger than the sum of its proper divisors (618974).

1237942 is an equidigital number, since it uses as much as digits as its factorization.

1237942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618973.

The product of its digits is 3024, while the sum is 28.

The square root of 1237942 is about 1112.6284195543. The cubic root of 1237942 is about 107.3742390883.

It can be divided in two parts, 12379 and 42, that added together give a palindrome (12421).

The spelling of 1237942 in words is "one million, two hundred thirty-seven thousand, nine hundred forty-two".