1292420 has 12 divisors (see below), whose sum is σ = 2714124. Its totient is φ = 516960.

The previous prime is 1292419. The next prime is 1292429. The reversal of 1292420 is 242921.

It can be written as a sum of positive squares in 2 ways, for example, as 173056 + 1119364 = 416^2 + 1058^2 .

It is a super-3 number, since 3×1292420³ = 6476379133321464000, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 64621 = 1292420 / (1 + 2 + 9 + 2 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1292392 and 1292401.

It is not an unprimeable number, because it can be changed into a prime (1292429) 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, 32291 + ... + 32330.

It is an arithmetic number, because the mean of its divisors is an integer number (226177).

2^1292420 is an apocalyptic number.

1292420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1292420 is an abundant number, since it is smaller than the sum of its proper divisors (1421704).

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

1292420 is a wasteful number, since it uses less digits than its factorization.

1292420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64630 (or 64628 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1292420 is about 1136.8465155860. The cubic root of 1292420 is about 108.9267526859.

The spelling of 1292420 in words is "one million, two hundred ninety-two thousand, four hundred twenty".