1012400144 has 20 divisors (see below), whose sum is σ = 2241743424. Its totient is φ = 433885728.

The previous prime is 1012400143. The next prime is 1012400183. The reversal of 1012400144 is 4410042101.

It is not an unprimeable number, because it can be changed into a prime (1012400141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4519532 + ... + 4519755.

Almost surely, 2^1012400144 is an apocalyptic number.

1012400144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1012400144 is an abundant number, since it is smaller than the sum of its proper divisors (1229343280).

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

1012400144 is an equidigital number, since it uses as much as digits as its factorization.

1012400144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9039302 (or 9039296 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1012400144 is about 31818.2360290447. The cubic root of 1012400144 is about 1004.1164132248.

Adding to 1012400144 its reverse (4410042101), we get a palindrome (5422442245).

The spelling of 1012400144 in words is "one billion, twelve million, four hundred thousand, one hundred forty-four".