420157623 has 8 divisors (see below), whose sum is σ = 568100736. Its totient is φ = 276159800.

The previous prime is 420157561. The next prime is 420157631. The reversal of 420157623 is 326751024.

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 420157623 - 2²¹ = 418060471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420157643) 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, 986073 + ... + 986498.

It is an arithmetic number, because the mean of its divisors is an integer number (71012592).

Almost surely, 2^420157623 is an apocalyptic number.

420157623 is a deficient number, since it is larger than the sum of its proper divisors (147943113).

420157623 is a wasteful number, since it uses less digits than its factorization.

420157623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972645.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 420157623 is about 20497.7467786096. The cubic root of 420157623 is about 748.9809110151.

The spelling of 420157623 in words is "four hundred twenty million, one hundred fifty-seven thousand, six hundred twenty-three".