1422667 has 4 divisors (see below), whose sum is σ = 1446840. Its totient is φ = 1398496.

The previous prime is 1422661. The next prime is 1422671. The reversal of 1422667 is 7662241.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1422667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1422661) 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, 11998 + ... + 12115.

It is an arithmetic number, because the mean of its divisors is an integer number (361710).

2^1422667 is an apocalyptic number.

1422667 is a deficient number, since it is larger than the sum of its proper divisors (24173).

1422667 is an equidigital number, since it uses as much as digits as its factorization.

1422667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24172.

The product of its digits is 4032, while the sum is 28.

The square root of 1422667 is about 1192.7560521750. The cubic root of 1422667 is about 112.4694106134.

It can be divided in two parts, 142 and 2667, that added together give a square (2809 = 53²).

The spelling of 1422667 in words is "one million, four hundred twenty-two thousand, six hundred sixty-seven".