1142992620 has 720 divisors, whose sum is σ = 4866523200. Its totient is φ = 223534080.

The previous prime is 1142992549. The next prime is 1142992649. The reversal of 1142992620 is 262992411.

1142992620 is a `hidden beast` number, since 1 + 1 + 4 + 29 + 9 + 2 + 620 = 666.

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

It is an unprimeable number.

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 239 ways as a sum of consecutive naturals, for example, 67234852 + ... + 67234868.

It is an arithmetic number, because the mean of its divisors is an integer number (6759060).

Almost surely, 2^1142992620 is an apocalyptic number.

1142992620 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 1142992620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2433261600).

1142992620 is an abundant number, since it is smaller than the sum of its proper divisors (3723530580).

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

1142992620 is a wasteful number, since it uses less digits than its factorization.

1142992620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81 (or 45 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 1142992620 is about 33808.1738637271. The cubic root of 1142992620 is about 1045.5572282073.

The spelling of 1142992620 in words is "one billion, one hundred forty-two million, nine hundred ninety-two thousand, six hundred twenty".