1642275 has 30 divisors (see below), whose sum is σ = 3045812. Its totient is φ = 874800.

The previous prime is 1642273. The next prime is 1642279. The reversal of 1642275 is 5722461.

It is not a de Polignac number, because 1642275 - 2¹ = 1642273 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (1642273) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1620 + ... + 2430.

2^1642275 is an apocalyptic number.

1642275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1642275 is a deficient number, since it is larger than the sum of its proper divisors (1403537).

1642275 is an equidigital number, since it uses as much as digits as its factorization.

1642275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833 (or 819 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 1642275 is about 1281.5127779308. The cubic root of 1642275 is about 117.9818750290.

The spelling of 1642275 in words is "one million, six hundred forty-two thousand, two hundred seventy-five".