1292478 has 16 divisors (see below), whose sum is σ = 2820096. Its totient is φ = 391640.

The previous prime is 1292477. The next prime is 1292491. The reversal of 1292478 is 8742921.

It is a happy number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1292477) 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 7 ways as a sum of consecutive naturals, for example, 9726 + ... + 9857.

It is an arithmetic number, because the mean of its divisors is an integer number (176256).

2^1292478 is an apocalyptic number.

1292478 is an abundant number, since it is smaller than the sum of its proper divisors (1527618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1292478 is a wasteful number, since it uses less digits than its factorization.

1292478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19599.

The product of its digits is 8064, while the sum is 33.

The square root of 1292478 is about 1136.8720244601. The cubic root of 1292478 is about 108.9283820987.

It can be divided in two parts, 1292 and 478, that added together give a triangular number (1770 = T₅₉).

The spelling of 1292478 in words is "one million, two hundred ninety-two thousand, four hundred seventy-eight".