2400421402 has 4 divisors (see below), whose sum is σ = 3600632106. Its totient is φ = 1200210700.

The previous prime is 2400421391. The next prime is 2400421423. The reversal of 2400421402 is 2041240042.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1499160961 + 901260441 = 38719^2 + 30021^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2400421402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600105349 + ... + 600105352.

Almost surely, 2^2400421402 is an apocalyptic number.

2400421402 is a deficient number, since it is larger than the sum of its proper divisors (1200210704).

2400421402 is a wasteful number, since it uses less digits than its factorization.

2400421402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200210703.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 2400421402 is about 48994.0955830394. The cubic root of 2400421402 is about 1338.9442567962.

Adding to 2400421402 its reverse (2041240042), we get a palindrome (4441661444).

The spelling of 2400421402 in words is "two billion, four hundred million, four hundred twenty-one thousand, four hundred two".