424240144 has 10 divisors (see below), whose sum is σ = 821965310. Its totient is φ = 212120064.

The previous prime is 424240139. The next prime is 424240153. The reversal of 424240144 is 441042424.

It can be written as a sum of positive squares in only one way, i.e., 324000000 + 100240144 = 18000^2 + 10012^2 .

It is a super-2 number, since 2×424240144² = 359959399562281472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13257489 + ... + 13257520.

It is an arithmetic number, because the mean of its divisors is an integer number (82196531).

Almost surely, 2^424240144 is an apocalyptic number.

It is an amenable number.

424240144 is a deficient number, since it is larger than the sum of its proper divisors (397725166).

424240144 is a wasteful number, since it uses less digits than its factorization.

424240144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26515017 (or 26515011 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 25.

The square root of 424240144 is about 20597.0906683444. The cubic root of 424240144 is about 751.3989557561.

Adding to 424240144 its reverse (441042424), we get a palindrome (865282568).

The spelling of 424240144 in words is "four hundred twenty-four million, two hundred forty thousand, one hundred forty-four".