2140545405 has 8 divisors (see below), whose sum is σ = 3424872672. Its totient is φ = 1141624208.

The previous prime is 2140545391. The next prime is 2140545427. The reversal of 2140545405 is 5045450412.

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

It is a cyclic number.

It is not a de Polignac number, because 2140545405 - 2¹³ = 2140537213 is a prime.

It is a super-2 number, since 2×2140545405² = 9163869261733228050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71351499 + ... + 71351528.

It is an arithmetic number, because the mean of its divisors is an integer number (428109084).

Almost surely, 2^2140545405 is an apocalyptic number.

It is an amenable number.

2140545405 is a deficient number, since it is larger than the sum of its proper divisors (1284327267).

2140545405 is a wasteful number, since it uses less digits than its factorization.

2140545405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142703035.

The product of its (nonzero) digits is 16000, while the sum is 30.

The square root of 2140545405 is about 46266.0286279253. The cubic root of 2140545405 is about 1288.7682100220.

Adding to 2140545405 its reverse (5045450412), we get a palindrome (7185995817).

The spelling of 2140545405 in words is "two billion, one hundred forty million, five hundred forty-five thousand, four hundred five".