2451402 has 12 divisors (see below), whose sum is σ = 5311410. Its totient is φ = 817128.

The previous prime is 2451401. The next prime is 2451419. The reversal of 2451402 is 2041542.

It can be written as a sum of positive squares in only one way, i.e., 1962801 + 488601 = 1401^2 + 699^2 .

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: 136189 = 2451402 / (2 + 4 + 5 + 1 + 4 + 0 + 2).

It is not an unprimeable number, because it can be changed into a prime (2451401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68077 + ... + 68112.

2^2451402 is an apocalyptic number.

2451402 is an abundant number, since it is smaller than the sum of its proper divisors (2860008).

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

2451402 is a wasteful number, since it uses less digits than its factorization.

2451402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136197 (or 136194 counting only the distinct ones).

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

The square root of 2451402 is about 1565.6953726699. The cubic root of 2451402 is about 134.8356848588.

Adding to 2451402 its reverse (2041542), we get a palindrome (4492944).

The spelling of 2451402 in words is "two million, four hundred fifty-one thousand, four hundred two".