1352442021 has 64 divisors (see below), whose sum is σ = 2397081600. Its totient is φ = 659045376.

The previous prime is 1352442017. The next prime is 1352442037. The reversal of 1352442021 is 1202442531.

It is not a de Polignac number, because 1352442021 - 2² = 1352442017 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1352441982 and 1352442000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1352441021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 151675 + ... + 160343.

It is an arithmetic number, because the mean of its divisors is an integer number (37454400).

Almost surely, 2^1352442021 is an apocalyptic number.

It is an amenable number.

1352442021 is a deficient number, since it is larger than the sum of its proper divisors (1044639579).

1352442021 is a wasteful number, since it uses less digits than its factorization.

1352442021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8738.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 1352442021 is about 36775.5628237013. The cubic root of 1352442021 is about 1105.8754542689.

Adding to 1352442021 its reverse (1202442531), we get a palindrome (2554884552).

The spelling of 1352442021 in words is "one billion, three hundred fifty-two million, four hundred forty-two thousand, twenty-one".