1400142322 has 4 divisors (see below), whose sum is σ = 2100213486. Its totient is φ = 700071160.

The previous prime is 1400142299. The next prime is 1400142323. The reversal of 1400142322 is 2232410041.

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., 1348431841 + 51710481 = 36721^2 + 7191^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1400142322.

It is not an unprimeable number, because it can be changed into a prime (1400142323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 350035579 + ... + 350035582.

Almost surely, 2^1400142322 is an apocalyptic number.

1400142322 is a deficient number, since it is larger than the sum of its proper divisors (700071164).

1400142322 is an equidigital number, since it uses as much as digits as its factorization.

1400142322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700071163.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1400142322 is about 37418.4756771304. The cubic root of 1400142322 is about 1118.7268489035.

Adding to 1400142322 its reverse (2232410041), we get a palindrome (3632552363).

The spelling of 1400142322 in words is "one billion, four hundred million, one hundred forty-two thousand, three hundred twenty-two".