1190427840 has 364 divisors, whose sum is σ = 4859493456. Its totient is φ = 272097792.

The previous prime is 1190427829. The next prime is 1190427877. The reversal of 1190427840 is 487240911.

1190427840 is a `hidden beast` number, since 1 + 190 + 427 + 8 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1190427795 and 1190427804.

It is an unprimeable number.

It is a polite number, since it can be written in 51 ways as a sum of consecutive naturals, for example, 170061117 + ... + 170061123.

Almost surely, 2^1190427840 is an apocalyptic number.

1190427840 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 1190427840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2429746728).

1190427840 is an abundant number, since it is smaller than the sum of its proper divisors (3669065616).

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

1190427840 is an frugal number, since it uses more digits than its factorization.

1190427840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60 (or 17 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 1190427840 is about 34502.5772950370. The cubic root of 1190427840 is about 1059.8254845011.

The spelling of 1190427840 in words is "one billion, one hundred ninety million, four hundred twenty-seven thousand, eight hundred forty".