2154402 has 12 divisors (see below), whose sum is σ = 4667910. Its totient is φ = 718128.

The previous prime is 2154389. The next prime is 2154413. The reversal of 2154402 is 2044512.

2154402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2134521 + 19881 = 1461^2 + 141^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 119689 = 2154402 / (2 + 1 + 5 + 4 + 4 + 0 + 2).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 59827 + ... + 59862.

2^2154402 is an apocalyptic number.

2154402 is an abundant number, since it is smaller than the sum of its proper divisors (2513508).

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

2154402 is a wasteful number, since it uses less digits than its factorization.

2154402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119697 (or 119694 counting only the distinct ones).

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

The square root of 2154402 is about 1467.7881318501. The cubic root of 2154402 is about 129.1543132595.

Adding to 2154402 its reverse (2044512), we get a palindrome (4198914).

It can be divided in two parts, 2154 and 402, that added together give a triangular number (2556 = T₇₁).

The spelling of 2154402 in words is "two million, one hundred fifty-four thousand, four hundred two".