1642732241 has 4 divisors (see below), whose sum is σ = 1663526400. Its totient is φ = 1621938084.

The previous prime is 1642732237. The next prime is 1642732283. The reversal of 1642732241 is 1422372461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1642732241 - 2² = 1642732237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1642732198 and 1642732207.

It is not an unprimeable number, because it can be changed into a prime (1642722241) 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, 10396961 + ... + 10397118.

It is an arithmetic number, because the mean of its divisors is an integer number (415881600).

Almost surely, 2^1642732241 is an apocalyptic number.

It is an amenable number.

1642732241 is a deficient number, since it is larger than the sum of its proper divisors (20794159).

1642732241 is an equidigital number, since it uses as much as digits as its factorization.

1642732241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20794158.

The product of its digits is 16128, while the sum is 32.

The square root of 1642732241 is about 40530.6333653941. The cubic root of 1642732241 is about 1179.9282348867.

The spelling of 1642732241 in words is "one billion, six hundred forty-two million, seven hundred thirty-two thousand, two hundred forty-one".