421929037 has 2 divisors, whose sum is σ = 421929038. Its totient is φ = 421929036.

The previous prime is 421929023. The next prime is 421929041. The reversal of 421929037 is 730929124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 382163401 + 39765636 = 19549^2 + 6306^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421929037 is a prime.

It is a super-2 number, since 2×421929037² = 356048224527494738, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 421928987 and 421929005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421929017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210964518 + 210964519.

It is an arithmetic number, because the mean of its divisors is an integer number (210964519).

Almost surely, 2^421929037 is an apocalyptic number.

It is an amenable number.

421929037 is a deficient number, since it is larger than the sum of its proper divisors (1).

421929037 is an equidigital number, since it uses as much as digits as its factorization.

421929037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 421929037 is about 20540.9112991610. The cubic root of 421929037 is about 750.0320205588.

The spelling of 421929037 in words is "four hundred twenty-one million, nine hundred twenty-nine thousand, thirty-seven".