369742821 has 16 divisors (see below), whose sum is σ = 565906944. Its totient is φ = 210348144.

The previous prime is 369742819. The next prime is 369742823. The reversal of 369742821 is 128247963.

It is an interprime number because it is at equal distance from previous prime (369742819) and next prime (369742823).

It is not a de Polignac number, because 369742821 - 2¹ = 369742819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (369742823) 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, 34015 + ... + 43548.

It is an arithmetic number, because the mean of its divisors is an integer number (35369184).

Almost surely, 2^369742821 is an apocalyptic number.

It is an amenable number.

369742821 is a deficient number, since it is larger than the sum of its proper divisors (196164123).

369742821 is a wasteful number, since it uses less digits than its factorization.

369742821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77800.

The product of its digits is 145152, while the sum is 42.

The square root of 369742821 is about 19228.6978498285. The cubic root of 369742821 is about 717.7390631384.

The spelling of 369742821 in words is "three hundred sixty-nine million, seven hundred forty-two thousand, eight hundred twenty-one".