42153493 has 2 divisors, whose sum is σ = 42153494. Its totient is φ = 42153492.

The previous prime is 42153491. The next prime is 42153541. The reversal of 42153493 is 39435124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36687249 + 5466244 = 6057^2 + 2338^2 .

It is a cyclic number.

It is not a de Polignac number, because 42153493 - 2¹ = 42153491 is a prime.

Together with 42153491, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42153491) 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 as a sum of consecutive naturals, namely, 21076746 + 21076747.

It is an arithmetic number, because the mean of its divisors is an integer number (21076747).

Almost surely, 2^42153493 is an apocalyptic number.

It is an amenable number.

42153493 is a deficient number, since it is larger than the sum of its proper divisors (1).

42153493 is an equidigital number, since it uses as much as digits as its factorization.

42153493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 31.

The square root of 42153493 is about 6492.5721405311. The cubic root of 42153493 is about 348.0255987026.

The spelling of 42153493 in words is "forty-two million, one hundred fifty-three thousand, four hundred ninety-three".