1401440122 has 4 divisors (see below), whose sum is σ = 2102160186. Its totient is φ = 700720060.

The previous prime is 1401440111. The next prime is 1401440123. The reversal of 1401440122 is 2210441041.

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., 806616801 + 594823321 = 28401^2 + 24389^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1401440122.

It is not an unprimeable number, because it can be changed into a prime (1401440123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 350360029 + ... + 350360032.

Almost surely, 2^1401440122 is an apocalyptic number.

1401440122 is a deficient number, since it is larger than the sum of its proper divisors (700720064).

1401440122 is an equidigital number, since it uses as much as digits as its factorization.

1401440122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700720063.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1401440122 is about 37435.8133610050. The cubic root of 1401440122 is about 1119.0723936209.

Adding to 1401440122 its reverse (2210441041), we get a palindrome (3611881163).

The spelling of 1401440122 in words is "one billion, four hundred one million, four hundred forty thousand, one hundred twenty-two".