1622142 has 24 divisors (see below), whose sum is σ = 3539016. Its totient is φ = 536976.

The previous prime is 1622141. The next prime is 1622143. The reversal of 1622142 is 2412261.

1622142 is a `hidden beast` number, since 1 + 622 + 1 + 42 = 666.

It is an interprime number because it is at equal distance from previous prime (1622141) and next prime (1622143).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1622141) 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, 3888 + ... + 4284.

It is an arithmetic number, because the mean of its divisors is an integer number (147459).

2^1622142 is an apocalyptic number.

1622142 is an abundant number, since it is smaller than the sum of its proper divisors (1916874).

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

1622142 is a wasteful number, since it uses less digits than its factorization.

1622142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632 (or 629 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 1622142 is about 1273.6333852408. The cubic root of 1622142 is about 117.4977696876.

It can be divided in two parts, 1622 and 142, that added together give a square (1764 = 42²).

The spelling of 1622142 in words is "one million, six hundred twenty-two thousand, one hundred forty-two".