1642812 has 24 divisors (see below), whose sum is σ = 4059216. Its totient is φ = 515328.

The previous prime is 1642811. The next prime is 1642813. The reversal of 1642812 is 2182461.

It is an interprime number because it is at equal distance from previous prime (1642811) and next prime (1642813).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3823 + ... + 4230.

It is an arithmetic number, because the mean of its divisors is an integer number (169134).

2^1642812 is an apocalyptic number.

1642812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1642812 is an abundant number, since it is smaller than the sum of its proper divisors (2416404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1642812 is a wasteful number, since it uses less digits than its factorization.

1642812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8077 (or 8075 counting only the distinct ones).

The product of its digits is 768, while the sum is 24.

The square root of 1642812 is about 1281.7222788108. The cubic root of 1642812 is about 117.9947330791.

It can be divided in two parts, 16428 and 12, that multiplied together give a square (197136 = 444²).

The spelling of 1642812 in words is "one million, six hundred forty-two thousand, eight hundred twelve".