1290074040 has 80 divisors (see below), whose sum is σ = 4336093080. Its totient is φ = 344018880.

The previous prime is 1290074017. The next prime is 1290074057. The reversal of 1290074040 is 404700921.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1290073995 and 1290074013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 195846 + ... + 202325.

Almost surely, 2^1290074040 is an apocalyptic number.

1290074040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1290074040 is an abundant number, since it is smaller than the sum of its proper divisors (3046019040).

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

1290074040 is a wasteful number, since it uses less digits than its factorization.

1290074040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398194 (or 398181 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 1290074040 is about 35917.6006993786. The cubic root of 1290074040 is about 1088.6080596692.

Adding to 1290074040 its reverse (404700921), we get a palindrome (1694774961).

The spelling of 1290074040 in words is "one billion, two hundred ninety million, seventy-four thousand, forty".