1242764 has 12 divisors (see below), whose sum is σ = 2197944. Its totient is φ = 614784.

The previous prime is 1242763. The next prime is 1242767. The reversal of 1242764 is 4672421.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a d-powerful number, because it can be written as 1 + 2¹³ + 4 + 2¹⁷ + 7⁷ + 6⁷ + 4² .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1214 + ... + 1989.

It is an arithmetic number, because the mean of its divisors is an integer number (183162).

2^1242764 is an apocalyptic number.

It is an amenable number.

1242764 is a deficient number, since it is larger than the sum of its proper divisors (955180).

1242764 is a wasteful number, since it uses less digits than its factorization.

1242764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3304 (or 3302 counting only the distinct ones).

The product of its digits is 2688, while the sum is 26.

The square root of 1242764 is about 1114.7932543750. The cubic root of 1242764 is about 107.5134722614.

The spelling of 1242764 in words is "one million, two hundred forty-two thousand, seven hundred sixty-four".