1301990 has 8 divisors (see below), whose sum is σ = 2343600. Its totient is φ = 520792.

The previous prime is 1301959. The next prime is 1302017. The reversal of 1301990 is 991031.

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

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 3 ways as a sum of consecutive naturals, for example, 65090 + ... + 65109.

It is an arithmetic number, because the mean of its divisors is an integer number (292950).

2^1301990 is an apocalyptic number.

1301990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1301990 is a deficient number, since it is larger than the sum of its proper divisors (1041610).

1301990 is a wasteful number, since it uses less digits than its factorization.

1301990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130206.

The product of its (nonzero) digits is 243, while the sum is 23.

The square root of 1301990 is about 1141.0477641186. The cubic root of 1301990 is about 109.1949489360.

The spelling of 1301990 in words is "one million, three hundred one thousand, nine hundred ninety".