1145990 has 8 divisors (see below), whose sum is σ = 2062800. Its totient is φ = 458392.

The previous prime is 1145983. The next prime is 1145999. The reversal of 1145990 is 995411.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145999) 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, 57290 + ... + 57309.

It is an arithmetic number, because the mean of its divisors is an integer number (257850).

2^1145990 is an apocalyptic number.

1145990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1145990 is a deficient number, since it is larger than the sum of its proper divisors (916810).

1145990 is a wasteful number, since it uses less digits than its factorization.

1145990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114606.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 1145990 is about 1070.5092246216. The cubic root of 1145990 is about 104.6470385704.

The spelling of 1145990 in words is "one million, one hundred forty-five thousand, nine hundred ninety".