1421975 has 12 divisors (see below), whose sum is σ = 1840656. Its totient is φ = 1087680.

The previous prime is 1421969. The next prime is 1421977. The reversal of 1421975 is 5791241.

It is not a de Polignac number, because 1421975 - 2⁶ = 1421911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 662 + ... + 1811.

It is an arithmetic number, because the mean of its divisors is an integer number (153388).

2^1421975 is an apocalyptic number.

1421975 is a deficient number, since it is larger than the sum of its proper divisors (418681).

1421975 is a wasteful number, since it uses less digits than its factorization.

1421975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2506 (or 2501 counting only the distinct ones).

The product of its digits is 2520, while the sum is 29.

The square root of 1421975 is about 1192.4659324274. The cubic root of 1421975 is about 112.4511722262.

The spelling of 1421975 in words is "one million, four hundred twenty-one thousand, nine hundred seventy-five".