1212023040 has 72 divisors (see below), whose sum is σ = 3870910848. Its totient is φ = 323205120.

The previous prime is 1212023039. The next prime is 1212023081. The reversal of 1212023040 is 403202121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153976 + ... + 161655.

Almost surely, 2^1212023040 is an apocalyptic number.

1212023040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212023040 is an abundant number, since it is smaller than the sum of its proper divisors (2658887808).

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

1212023040 is an equidigital number, since it uses as much as digits as its factorization.

1212023040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315655 (or 315641 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1212023040 is about 34814.1212728398. The cubic root of 1212023040 is about 1066.1957782643.

Adding to 1212023040 its reverse (403202121), we get a palindrome (1615225161).

The spelling of 1212023040 in words is "one billion, two hundred twelve million, twenty-three thousand, forty".