420140152 has 8 divisors (see below), whose sum is σ = 787762800. Its totient is φ = 210070072.

The previous prime is 420140137. The next prime is 420140153. The reversal of 420140152 is 251041024.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420140153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26258752 + ... + 26258767.

It is an arithmetic number, because the mean of its divisors is an integer number (98470350).

Almost surely, 2^420140152 is an apocalyptic number.

It is an amenable number.

420140152 is a deficient number, since it is larger than the sum of its proper divisors (367622648).

420140152 is a wasteful number, since it uses less digits than its factorization.

420140152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52517525 (or 52517521 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 420140152 is about 20497.3206053865. The cubic root of 420140152 is about 748.9705294931.

Adding to 420140152 its reverse (251041024), we get a palindrome (671181176).

The spelling of 420140152 in words is "four hundred twenty million, one hundred forty thousand, one hundred fifty-two".