1229037240 has 32 divisors (see below), whose sum is σ = 3687112080. Its totient is φ = 327743232.

The previous prime is 1229037181. The next prime is 1229037281. The reversal of 1229037240 is 427309221.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1229037198 and 1229037207.

It is a congruent number.

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, 5120869 + ... + 5121108.

Almost surely, 2^1229037240 is an apocalyptic number.

1229037240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1229037240 is an abundant number, since it is smaller than the sum of its proper divisors (2458074840).

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

1229037240 is a wasteful number, since it uses less digits than its factorization.

1229037240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10241991 (or 10241987 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 1229037240 is about 35057.6274154427. The cubic root of 1229037240 is about 1071.1616463700.

The spelling of 1229037240 in words is "one billion, two hundred twenty-nine million, thirty-seven thousand, two hundred forty".