37243021 has 8 divisors (see below), whose sum is σ = 39290400. Its totient is φ = 35204400.

The previous prime is 37242973. The next prime is 37243027. The reversal of 37243021 is 12034273.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 37243021 - 2⁹ = 37242509 is a prime.

It is a super-2 number, since 2×37243021² = 2774085226412882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 37242983 and 37243001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37243027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7746 + ... + 11596.

It is an arithmetic number, because the mean of its divisors is an integer number (4911300).

Almost surely, 2^37243021 is an apocalyptic number.

It is an amenable number.

37243021 is a deficient number, since it is larger than the sum of its proper divisors (2047379).

37243021 is a wasteful number, since it uses less digits than its factorization.

37243021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4379.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 37243021 is about 6102.7060391272. The cubic root of 37243021 is about 333.9501431551.

Adding to 37243021 its reverse (12034273), we get a palindrome (49277294).

The spelling of 37243021 in words is "thirty-seven million, two hundred forty-three thousand, twenty-one".