140601405 has 16 divisors (see below), whose sum is σ = 257099904. Its totient is φ = 64274880.

The previous prime is 140601379. The next prime is 140601413. The reversal of 140601405 is 504106041.

It is not a de Polignac number, because 140601405 - 2¹¹ = 140599357 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 669426 + ... + 669635.

It is an arithmetic number, because the mean of its divisors is an integer number (16068744).

Almost surely, 2^140601405 is an apocalyptic number.

140601405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140601405 is a deficient number, since it is larger than the sum of its proper divisors (116498499).

140601405 is a wasteful number, since it uses less digits than its factorization.

140601405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339076.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 140601405 is about 11857.5463313453. The cubic root of 140601405 is about 519.9918699419.

Adding to 140601405 its reverse (504106041), we get a palindrome (644707446).

The spelling of 140601405 in words is "one hundred forty million, six hundred one thousand, four hundred five".