1290465 has 48 divisors (see below), whose sum is σ = 2553600. Its totient is φ = 617760.

The previous prime is 1290463. The next prime is 1290467. The reversal of 1290465 is 5640921.

It is an interprime number because it is at equal distance from previous prime (1290463) and next prime (1290467).

It is not a de Polignac number, because 1290465 - 2¹ = 1290463 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

1290465 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1290463) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16296 + ... + 16374.

It is an arithmetic number, because the mean of its divisors is an integer number (53200).

2^1290465 is an apocalyptic number.

1290465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1290465 is a deficient number, since it is larger than the sum of its proper divisors (1263135).

1290465 is a wasteful number, since it uses less digits than its factorization.

1290465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1290465 is about 1135.9863555519. The cubic root of 1290465 is about 108.8718016981.

The spelling of 1290465 in words is "one million, two hundred ninety thousand, four hundred sixty-five".