2140455 has 8 divisors (see below), whose sum is σ = 3424752. Its totient is φ = 1141568.

The previous prime is 2140447. The next prime is 2140459. The reversal of 2140455 is 5540412.

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 2140455 - 2³ = 2140447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71334 + ... + 71363.

It is an arithmetic number, because the mean of its divisors is an integer number (428094).

2^2140455 is an apocalyptic number.

2140455 is a deficient number, since it is larger than the sum of its proper divisors (1284297).

2140455 is a wasteful number, since it uses less digits than its factorization.

2140455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142705.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 2140455 is about 1463.0293913657. The cubic root of 2140455 is about 128.8750066246.

Adding to 2140455 its reverse (5540412), we get a palindrome (7680867).

The spelling of 2140455 in words is "two million, one hundred forty thousand, four hundred fifty-five".