2145430 has 16 divisors (see below), whose sum is σ = 4413600. Its totient is φ = 735552.

The previous prime is 2145421. The next prime is 2145433. The reversal of 2145430 is 345412.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 2145398 and 2145407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145433) 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, 15255 + ... + 15394.

It is an arithmetic number, because the mean of its divisors is an integer number (275850).

2^2145430 is an apocalyptic number.

2145430 is an abundant number, since it is smaller than the sum of its proper divisors (2268170).

2145430 is a wasteful number, since it uses less digits than its factorization.

2145430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30663.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 2145430 is about 1464.7286438109. The cubic root of 2145430 is about 128.9747762312.

It can be divided in two parts, 21 and 45430, that added together give a triangular number (45451 = T₃₀₁).

The spelling of 2145430 in words is "two million, one hundred forty-five thousand, four hundred thirty".