1400422144 has 36 divisors (see below), whose sum is σ = 3049504920. Its totient is φ = 636554240.

The previous prime is 1400422129. The next prime is 1400422157. The reversal of 1400422144 is 4412240041.

It is a super-2 number, since 2×1400422144² = 3922364362811113472, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

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, 245839 + ... + 251470.

It is an arithmetic number, because the mean of its divisors is an integer number (84708470).

Almost surely, 2^1400422144 is an apocalyptic number.

It is an amenable number.

1400422144 is an abundant number, since it is smaller than the sum of its proper divisors (1649082776).

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

1400422144 is an equidigital number, since it uses as much as digits as its factorization.

1400422144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497336 (or 497322 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 1400422144 is about 37422.2145790438. The cubic root of 1400422144 is about 1118.8013707402.

Adding to 1400422144 its reverse (4412240041), we get a palindrome (5812662185).

The spelling of 1400422144 in words is "one billion, four hundred million, four hundred twenty-two thousand, one hundred forty-four".