1042732221 has 16 divisors (see below), whose sum is σ = 1400475648. Its totient is φ = 690087600.

The previous prime is 1042732211. The next prime is 1042732267. The reversal of 1042732221 is 1222372401.

It is not a de Polignac number, because 1042732221 - 2⁶ = 1042732157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1042732191 and 1042732200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042732211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 325590 + ... + 328776.

It is an arithmetic number, because the mean of its divisors is an integer number (87529728).

Almost surely, 2^1042732221 is an apocalyptic number.

It is an amenable number.

1042732221 is a deficient number, since it is larger than the sum of its proper divisors (357743427).

1042732221 is a wasteful number, since it uses less digits than its factorization.

1042732221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3952.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 1042732221 is about 32291.3644957905. The cubic root of 1042732221 is about 1014.0458636943.

The spelling of 1042732221 in words is "one billion, forty-two million, seven hundred thirty-two thousand, two hundred twenty-one".