140941830 has 64 divisors (see below), whose sum is σ = 346106880. Its totient is φ = 36723456.

The previous prime is 140941819. The next prime is 140941837. The reversal of 140941830 is 38149041.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140941837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 304179 + ... + 304641.

It is an arithmetic number, because the mean of its divisors is an integer number (5407920).

Almost surely, 2^140941830 is an apocalyptic number.

140941830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 140941830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173053440).

140941830 is an abundant number, since it is smaller than the sum of its proper divisors (205165050).

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

140941830 is a wasteful number, since it uses less digits than its factorization.

140941830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 140941830 is about 11871.8924354965. The cubic root of 140941830 is about 520.4112008827.

The spelling of 140941830 in words is "one hundred forty million, nine hundred forty-one thousand, eight hundred thirty".