1190139720 has 256 divisors, whose sum is σ = 4486164480. Its totient is φ = 245376000.

The previous prime is 1190139719. The next prime is 1190139721. The reversal of 1190139720 is 279310911.

It is an interprime number because it is at equal distance from previous prime (1190139719) and next prime (1190139721).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1190139721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1394814 + ... + 1395666.

It is an arithmetic number, because the mean of its divisors is an integer number (17524080).

Almost surely, 2^1190139720 is an apocalyptic number.

1190139720 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 1190139720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2243082240).

1190139720 is an abundant number, since it is smaller than the sum of its proper divisors (3296024760).

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

1190139720 is a wasteful number, since it uses less digits than its factorization.

1190139720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036 (or 1032 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 33.

The square root of 1190139720 is about 34498.4017021079. The cubic root of 1190139720 is about 1059.7399741922.

The spelling of 1190139720 in words is "one billion, one hundred ninety million, one hundred thirty-nine thousand, seven hundred twenty".