420071029 has 8 divisors (see below), whose sum is σ = 480244608. Its totient is φ = 359938320.

The previous prime is 420071021. The next prime is 420071077. The reversal of 420071029 is 920170024.

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

It is not a de Polignac number, because 420071029 - 2³ = 420071021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420070994 and 420071012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420071021) 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, 16464 + ... + 33334.

It is an arithmetic number, because the mean of its divisors is an integer number (60030576).

Almost surely, 2^420071029 is an apocalyptic number.

It is an amenable number.

420071029 is a deficient number, since it is larger than the sum of its proper divisors (60173579).

420071029 is a wasteful number, since it uses less digits than its factorization.

420071029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20435.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 420071029 is about 20495.6343888156. The cubic root of 420071029 is about 748.9294527801.

The spelling of 420071029 in words is "four hundred twenty million, seventy-one thousand, twenty-nine".