1225442 has 8 divisors (see below), whose sum is σ = 1848000. Its totient is φ = 609444.

The previous prime is 1225409. The next prime is 1225459. The reversal of 1225442 is 2445221.

It is a happy number.

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

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, 1142 + ... + 1937.

It is an arithmetic number, because the mean of its divisors is an integer number (231000).

2^1225442 is an apocalyptic number.

1225442 is a deficient number, since it is larger than the sum of its proper divisors (622558).

1225442 is a wasteful number, since it uses less digits than its factorization.

1225442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3280.

The product of its digits is 640, while the sum is 20.

The square root of 1225442 is about 1106.9968382972. The cubic root of 1225442 is about 107.0116154741.

The spelling of 1225442 in words is "one million, two hundred twenty-five thousand, four hundred forty-two".