1275223040 has 528 divisors, whose sum is σ = 4234047552. Its totient is φ = 363331584.

The previous prime is 1275223031. The next prime is 1275223051. The reversal of 1275223040 is 403225721.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 55444469 + ... + 55444491.

Almost surely, 2^1275223040 is an apocalyptic number.

1275223040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1275223040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2117023776).

1275223040 is an abundant number, since it is smaller than the sum of its proper divisors (2958824512).

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

1275223040 is a wasteful number, since it uses less digits than its factorization.

1275223040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 1275223040 is about 35710.2651908383. The cubic root of 1275223040 is about 1084.4146686759.

Adding to 1275223040 its reverse (403225721), we get a palindrome (1678448761).

The spelling of 1275223040 in words is "one billion, two hundred seventy-five million, two hundred twenty-three thousand, forty".