1420818 has 16 divisors (see below), whose sum is σ = 3247680. Its totient is φ = 405936.

The previous prime is 1420817. The next prime is 1420819. The reversal of 1420818 is 8180241.

It is an interprime number because it is at equal distance from previous prime (1420817) and next prime (1420819).

It is not an unprimeable number, because it can be changed into a prime (1420817) 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, 16873 + ... + 16956.

It is an arithmetic number, because the mean of its divisors is an integer number (202980).

2^1420818 is an apocalyptic number.

1420818 is an abundant number, since it is smaller than the sum of its proper divisors (1826862).

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

1420818 is a wasteful number, since it uses less digits than its factorization.

1420818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33841.

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 1420818 is about 1191.9807045418. The cubic root of 1420818 is about 112.4206650538.

The spelling of 1420818 in words is "one million, four hundred twenty thousand, eight hundred eighteen".