1143615 has 32 divisors (see below), whose sum is σ = 2073600. Its totient is φ = 533120.

The previous prime is 1143601. The next prime is 1143619. The reversal of 1143615 is 5163411.

It is not a de Polignac number, because 1143615 - 2⁶ = 1143551 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1143591 and 1143600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4666 + ... + 4904.

It is an arithmetic number, because the mean of its divisors is an integer number (64800).

2^1143615 is an apocalyptic number.

1143615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1143615 is a deficient number, since it is larger than the sum of its proper divisors (929985).

1143615 is a wasteful number, since it uses less digits than its factorization.

1143615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287.

The product of its digits is 360, while the sum is 21.

The square root of 1143615 is about 1069.3993641292. The cubic root of 1143615 is about 104.5746968666.

Multiplying 1143615 by its sum of digits (21), we get a triangular number (24015915 = T₆₉₃₀).

The spelling of 1143615 in words is "one million, one hundred forty-three thousand, six hundred fifteen".