1142640030 has 64 divisors (see below), whose sum is σ = 3200808960. Its totient is φ = 255615744.

The previous prime is 1142640017. The next prime is 1142640041. The reversal of 1142640030 is 300462411.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1142639979 and 1142640006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48015 + ... + 67754.

It is an arithmetic number, because the mean of its divisors is an integer number (50012640).

Almost surely, 2^1142640030 is an apocalyptic number.

1142640030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1142640030 is an abundant number, since it is smaller than the sum of its proper divisors (2058168930).

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

1142640030 is a wasteful number, since it uses less digits than its factorization.

1142640030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115833.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1142640030 is about 33802.9588941560. The cubic root of 1142640030 is about 1045.4497060966.

The spelling of 1142640030 in words is "one billion, one hundred forty-two million, six hundred forty thousand, thirty".