1290042288 has 60 divisors (see below), whose sum is σ = 3744053768. Its totient is φ = 430012800.

The previous prime is 1290042287. The next prime is 1290042311. The reversal of 1290042288 is 8822400921.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1290042287) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162013 + ... + 169788.

Almost surely, 2^1290042288 is an apocalyptic number.

1290042288 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1290042288 is an abundant number, since it is smaller than the sum of its proper divisors (2454011480).

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

1290042288 is an equidigital number, since it uses as much as digits as its factorization.

1290042288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331824 (or 331806 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 1290042288 is about 35917.1586849517. The cubic root of 1290042288 is about 1088.5991284591.

The spelling of 1290042288 in words is "one billion, two hundred ninety million, forty-two thousand, two hundred eighty-eight".