20120437 has 2 divisors, whose sum is σ = 20120438. Its totient is φ = 20120436.

The previous prime is 20120407. The next prime is 20120447. The reversal of 20120437 is 73402102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10329796 + 9790641 = 3214^2 + 3129^2 .

It is a cyclic number.

It is not a de Polignac number, because 20120437 - 2¹¹ = 20118389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20120407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060218 + 10060219.

It is an arithmetic number, because the mean of its divisors is an integer number (10060219).

Almost surely, 2^20120437 is an apocalyptic number.

It is an amenable number.

20120437 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120437 is an equidigital number, since it uses as much as digits as its factorization.

20120437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 20120437 is about 4485.5810103040. The cubic root of 20120437 is about 271.9855321385.

Adding to 20120437 its reverse (73402102), we get a palindrome (93522539).

The spelling of 20120437 in words is "twenty million, one hundred twenty thousand, four hundred thirty-seven".