420362749 has 4 divisors (see below), whose sum is σ = 420412320. Its totient is φ = 420313180.

The previous prime is 420362731. The next prime is 420362771. The reversal of 420362749 is 947263024.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 420362749 - 2¹¹ = 420360701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420362729) 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 3 ways as a sum of consecutive naturals, for example, 8497 + ... + 30214.

It is an arithmetic number, because the mean of its divisors is an integer number (105103080).

Almost surely, 2^420362749 is an apocalyptic number.

It is an amenable number.

420362749 is a deficient number, since it is larger than the sum of its proper divisors (49571).

420362749 is a wasteful number, since it uses less digits than its factorization.

420362749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49570.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 420362749 is about 20502.7497911865. The cubic root of 420362749 is about 749.1027783450.

The spelling of 420362749 in words is "four hundred twenty million, three hundred sixty-two thousand, seven hundred forty-nine".