140420610 has 192 divisors, whose sum is σ = 423895680. Its totient is φ = 31933440.

The previous prime is 140420591. The next prime is 140420617. The reversal of 140420610 is 16024041.

140420610 is a `hidden beast` number, since 14 + 0 + 42 + 0 + 610 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (140420617) 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 95 ways as a sum of consecutive naturals, for example, 1923534 + ... + 1923606.

It is an arithmetic number, because the mean of its divisors is an integer number (2207790).

Almost surely, 2^140420610 is an apocalyptic number.

140420610 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 140420610, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211947840).

140420610 is an abundant number, since it is smaller than the sum of its proper divisors (283475070).

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

140420610 is a wasteful number, since it uses less digits than its factorization.

140420610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 140420610 is about 11849.9202528962. The cubic root of 140420610 is about 519.7688938519.

Adding to 140420610 its reverse (16024041), we get a palindrome (156444651).

The spelling of 140420610 in words is "one hundred forty million, four hundred twenty thousand, six hundred ten".