420144152 has 8 divisors (see below), whose sum is σ = 787770300. Its totient is φ = 210072072.

The previous prime is 420144121. The next prime is 420144161. The reversal of 420144152 is 251441024.

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

It is a super-2 number, since 2×420144152² = 353042216919598208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26259002 + ... + 26259017.

Almost surely, 2^420144152 is an apocalyptic number.

It is an amenable number.

420144152 is a deficient number, since it is larger than the sum of its proper divisors (367626148).

420144152 is a wasteful number, since it uses less digits than its factorization.

420144152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52518025 (or 52518021 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 420144152 is about 20497.4181788829. The cubic root of 420144152 is about 748.9729063766.

Adding to 420144152 its reverse (251441024), we get a palindrome (671585176).

The spelling of 420144152 in words is "four hundred twenty million, one hundred forty-four thousand, one hundred fifty-two".