1400978122 has 8 divisors (see below), whose sum is σ = 2112356196. Its totient is φ = 696859392.

The previous prime is 1400978083. The next prime is 1400978149. The reversal of 1400978122 is 2218790041.

It can be written as a sum of positive squares in 2 ways, for example, as 1141155961 + 259822161 = 33781^2 + 16119^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1814353 + ... + 1815124.

Almost surely, 2^1400978122 is an apocalyptic number.

1400978122 is a deficient number, since it is larger than the sum of its proper divisors (711378074).

1400978122 is a wasteful number, since it uses less digits than its factorization.

1400978122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3629672.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 1400978122 is about 37429.6422905696. The cubic root of 1400978122 is about 1118.9494086378.

The spelling of 1400978122 in words is "one billion, four hundred million, nine hundred seventy-eight thousand, one hundred twenty-two".