420177740 has 12 divisors (see below), whose sum is σ = 882373296. Its totient is φ = 168071088.

The previous prime is 420177721. The next prime is 420177743. The reversal of 420177740 is 47771024.

It is a junction number, because it is equal to n+sod(n) for n = 420177697 and 420177706.

It is not an unprimeable number, because it can be changed into a prime (420177743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10504424 + ... + 10504463.

It is an arithmetic number, because the mean of its divisors is an integer number (73531108).

Almost surely, 2^420177740 is an apocalyptic number.

It is an amenable number.

420177740 is an abundant number, since it is smaller than the sum of its proper divisors (462195556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420177740 is a wasteful number, since it uses less digits than its factorization.

420177740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21008896 (or 21008894 counting only the distinct ones).

The product of its (nonzero) digits is 10976, while the sum is 32.

The square root of 420177740 is about 20498.2374852083. The cubic root of 420177740 is about 748.9928644724.

The spelling of 420177740 in words is "four hundred twenty million, one hundred seventy-seven thousand, seven hundred forty".