10400122 has 4 divisors (see below), whose sum is σ = 15600186. Its totient is φ = 5200060.

The previous prime is 10400077. The next prime is 10400123. The reversal of 10400122 is 22100401.

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., 10374841 + 25281 = 3221^2 + 159^2 .

It is a super-2 number, since 2×10400122² = 216325075229768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10400099 and 10400108.

It is not an unprimeable number, because it can be changed into a prime (10400123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2600029 + ... + 2600032.

Almost surely, 2^10400122 is an apocalyptic number.

10400122 is a deficient number, since it is larger than the sum of its proper divisors (5200064).

10400122 is an equidigital number, since it uses as much as digits as its factorization.

10400122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5200063.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 10400122 is about 3224.9220145610. The cubic root of 10400122 is about 218.2794301341.

Adding to 10400122 its reverse (22100401), we get a palindrome (32500523).

The spelling of 10400122 in words is "ten million, four hundred thousand, one hundred twenty-two".