10040402 has 4 divisors (see below), whose sum is σ = 15060606. Its totient is φ = 5020200.

The previous prime is 10040399. The next prime is 10040413. The reversal of 10040402 is 20404001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20404001 = 257 ⋅79393.

It can be written as a sum of positive squares in only one way, i.e., 5248681 + 4791721 = 2291^2 + 2189^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2510099 + ... + 2510102.

Almost surely, 2^10040402 is an apocalyptic number.

10040402 is a deficient number, since it is larger than the sum of its proper divisors (5020204).

10040402 is an equidigital number, since it uses as much as digits as its factorization.

10040402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5020203.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 10040402 is about 3168.6593379535. The cubic root of 10040402 is about 215.7332240312.

Adding to 10040402 its reverse (20404001), we get a palindrome (30444403).

The spelling of 10040402 in words is "ten million, forty thousand, four hundred two".