420431453515 has 4 divisors (see below), whose sum is σ = 504517744224. Its totient is φ = 336345162808.

The previous prime is 420431453471. The next prime is 420431453551. The reversal of 420431453515 is 515354134024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420431453515 - 2²¹ = 420429356363 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42043145347 + ... + 42043145356.

It is an arithmetic number, because the mean of its divisors is an integer number (126129436056).

Almost surely, 2^420431453515 is an apocalyptic number.

420431453515 is a deficient number, since it is larger than the sum of its proper divisors (84086290709).

420431453515 is an equidigital number, since it uses as much as digits as its factorization.

420431453515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84086290708.

The product of its (nonzero) digits is 144000, while the sum is 37.

Adding to 420431453515 its reverse (515354134024), we get a palindrome (935785587539).

The spelling of 420431453515 in words is "four hundred twenty billion, four hundred thirty-one million, four hundred fifty-three thousand, five hundred fifteen".