140420189 has 16 divisors (see below), whose sum is σ = 173107200. Its totient is φ = 110920320.

The previous prime is 140420107. The next prime is 140420191. The reversal of 140420189 is 981024041.

140420189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 140420189 - 2¹² = 140416093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140422189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94724 + ... + 96194.

It is an arithmetic number, because the mean of its divisors is an integer number (10819200).

Almost surely, 2^140420189 is an apocalyptic number.

It is an amenable number.

140420189 is a deficient number, since it is larger than the sum of its proper divisors (32687011).

140420189 is a wasteful number, since it uses less digits than its factorization.

140420189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2540.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 140420189 is about 11849.9024890503. The cubic root of 140420189 is about 519.7683744055.

The spelling of 140420189 in words is "one hundred forty million, four hundred twenty thousand, one hundred eighty-nine".