420712145 has 16 divisors (see below), whose sum is σ = 587865600. Its totient is φ = 283043904.

The previous prime is 420712121. The next prime is 420712151. The reversal of 420712145 is 541217024.

It is a cyclic number.

It is not a de Polignac number, because 420712145 - 2⁶ = 420712081 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111545 + ... + 115254.

It is an arithmetic number, because the mean of its divisors is an integer number (36741600).

Almost surely, 2^420712145 is an apocalyptic number.

It is an amenable number.

420712145 is a deficient number, since it is larger than the sum of its proper divisors (167153455).

420712145 is a wasteful number, since it uses less digits than its factorization.

420712145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226864.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 420712145 is about 20511.2687320897. The cubic root of 420712145 is about 749.3102666257.

Adding to 420712145 its reverse (541217024), we get a palindrome (961929169).

The spelling of 420712145 in words is "four hundred twenty million, seven hundred twelve thousand, one hundred forty-five".