120420637 has 2 divisors, whose sum is σ = 120420638. Its totient is φ = 120420636.

The previous prime is 120420631. The next prime is 120420659. The reversal of 120420637 is 736024021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113081956 + 7338681 = 10634^2 + 2709^2 .

It is an emirp because it is prime and its reverse (736024021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120420637 - 2¹¹ = 120418589 is a prime.

It is a super-2 number, since 2×120420637² = 29002259630971538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120420631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60210318 + 60210319.

It is an arithmetic number, because the mean of its divisors is an integer number (60210319).

Almost surely, 2^120420637 is an apocalyptic number.

It is an amenable number.

120420637 is a deficient number, since it is larger than the sum of its proper divisors (1).

120420637 is an equidigital number, since it uses as much as digits as its factorization.

120420637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 120420637 is about 10973.6337190559. The cubic root of 120420637 is about 493.8180650277.

Adding to 120420637 its reverse (736024021), we get a palindrome (856444658).

The spelling of 120420637 in words is "one hundred twenty million, four hundred twenty thousand, six hundred thirty-seven".