1042721746 has 16 divisors (see below), whose sum is σ = 1707477408. Its totient is φ = 473629600.

The previous prime is 1042721671. The next prime is 1042721747. The reversal of 1042721746 is 6471272401.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1042721747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16581 + ... + 48583.

It is an arithmetic number, because the mean of its divisors is an integer number (106717338).

Almost surely, 2^1042721746 is an apocalyptic number.

1042721746 is a deficient number, since it is larger than the sum of its proper divisors (664755662).

1042721746 is a wasteful number, since it uses less digits than its factorization.

1042721746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33497.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 1042721746 is about 32291.2023003170. The cubic root of 1042721746 is about 1014.0424680747.

The spelling of 1042721746 in words is "one billion, forty-two million, seven hundred twenty-one thousand, seven hundred forty-six".