140469506 has 8 divisors (see below), whose sum is σ = 210765564. Its totient is φ = 70214320.

The previous prime is 140469503. The next prime is 140469529. The reversal of 140469506 is 605964041.

It can be written as a sum of positive squares in 2 ways, for example, as 127803025 + 12666481 = 11305^2 + 3559^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (140469503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 716 + ... + 16776.

Almost surely, 2^140469506 is an apocalyptic number.

140469506 is a deficient number, since it is larger than the sum of its proper divisors (70296058).

140469506 is a wasteful number, since it uses less digits than its factorization.

140469506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20436.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 140469506 is about 11851.9832095730. The cubic root of 140469506 is about 519.8292165983.

The spelling of 140469506 in words is "one hundred forty million, four hundred sixty-nine thousand, five hundred six".