140619906 has 144 divisors (see below), whose sum is σ = 378443520. Its totient is φ = 37558080.

The previous prime is 140619901. The next prime is 140619923. The reversal of 140619906 is 609916041.

It is not an unprimeable number, because it can be changed into a prime (140619901) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1011585 + ... + 1011723.

It is an arithmetic number, because the mean of its divisors is an integer number (2628080).

Almost surely, 2^140619906 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140619906, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189221760).

140619906 is an abundant number, since it is smaller than the sum of its proper divisors (237823614).

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

140619906 is a wasteful number, since it uses less digits than its factorization.

140619906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 140619906 is about 11858.3264417876. The cubic root of 140619906 is about 520.0146766075.

It can be divided in two parts, 1406 and 19906, that added together give a palindrome (21312).

The spelling of 140619906 in words is "one hundred forty million, six hundred nineteen thousand, nine hundred six".