1240920000 has 350 divisors, whose sum is σ = 4608624768. Its totient is φ = 330048000.

The previous prime is 1240919959. The next prime is 1240920007. The reversal of 1240920000 is 290421.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240920007) by changing a digit.

It is a polite number, since it can be written in 49 ways as a sum of consecutive naturals, for example, 3239809 + ... + 3240191.

Almost surely, 2^1240920000 is an apocalyptic number.

1240920000 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 1240920000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2304312384).

1240920000 is an abundant number, since it is smaller than the sum of its proper divisors (3367704768).

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

1240920000 is an frugal number, since it uses more digits than its factorization.

1240920000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427 (or 393 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1240920000 is about 35226.6944234057. The cubic root of 1240920000 is about 1074.6027015711.

The spelling of 1240920000 in words is "one billion, two hundred forty million, nine hundred twenty thousand".