1261424 has 10 divisors (see below), whose sum is σ = 2444040. Its totient is φ = 630704.

The previous prime is 1261411. The next prime is 1261427. The reversal of 1261424 is 4241621.

It is a junction number, because it is equal to n+sod(n) for n = 1261396 and 1261405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39404 + ... + 39435.

It is an arithmetic number, because the mean of its divisors is an integer number (244404).

2^1261424 is an apocalyptic number.

It is an amenable number.

1261424 is a deficient number, since it is larger than the sum of its proper divisors (1182616).

1261424 is an equidigital number, since it uses as much as digits as its factorization.

1261424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78847 (or 78841 counting only the distinct ones).

The product of its digits is 384, while the sum is 20.

The square root of 1261424 is about 1123.1313369326. The cubic root of 1261424 is about 108.0489033215.

The spelling of 1261424 in words is "one million, two hundred sixty-one thousand, four hundred twenty-four".