2145402 has 24 divisors (see below), whose sum is σ = 5312736. Its totient is φ = 612936.

The previous prime is 2145401. The next prime is 2145421. The reversal of 2145402 is 2045412.

2145402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (2145401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8388 + ... + 8639.

It is an arithmetic number, because the mean of its divisors is an integer number (221364).

2^2145402 is an apocalyptic number.

2145402 is an abundant number, since it is smaller than the sum of its proper divisors (3167334).

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

2145402 is a wasteful number, since it uses less digits than its factorization.

2145402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17042 (or 17039 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 2145402 is about 1464.7190856953. The cubic root of 2145402 is about 128.9742151457.

The spelling of 2145402 in words is "two million, one hundred forty-five thousand, four hundred two".