1400444142 has 16 divisors (see below), whose sum is σ = 2803014912. Its totient is φ = 466460280.

The previous prime is 1400444137. The next prime is 1400444183. The reversal of 1400444142 is 2414440041.

It is a happy number.

It is a super-2 number, since 2×1400444142² = 3922487589724232328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79984 + ... + 95907.

It is an arithmetic number, because the mean of its divisors is an integer number (175188432).

Almost surely, 2^1400444142 is an apocalyptic number.

1400444142 is an abundant number, since it is smaller than the sum of its proper divisors (1402570770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1400444142 is a wasteful number, since it uses less digits than its factorization.

1400444142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177223.

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 1400444142 is about 37422.5084942204. The cubic root of 1400444142 is about 1118.8072287985.

Adding to 1400444142 its reverse (2414440041), we get a palindrome (3814884183).

The spelling of 1400444142 in words is "one billion, four hundred million, four hundred forty-four thousand, one hundred forty-two".