1400442152 has 8 divisors (see below), whose sum is σ = 2625829050. Its totient is φ = 700221072.

The previous prime is 1400442149. The next prime is 1400442157. The reversal of 1400442152 is 2512440041.

It can be written as a sum of positive squares in only one way, i.e., 961372036 + 439070116 = 31006^2 + 20954^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1400442152² = 3922476442196782208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1400442157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 87527627 + ... + 87527642.

Almost surely, 2^1400442152 is an apocalyptic number.

It is an amenable number.

1400442152 is a deficient number, since it is larger than the sum of its proper divisors (1225386898).

1400442152 is a wasteful number, since it uses less digits than its factorization.

1400442152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175055275 (or 175055271 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 1400442152 is about 37422.4819059346. The cubic root of 1400442152 is about 1118.8066988648.

Adding to 1400442152 its reverse (2512440041), we get a palindrome (3912882193).

The spelling of 1400442152 in words is "one billion, four hundred million, four hundred forty-two thousand, one hundred fifty-two".