1642265424 has 240 divisors, whose sum is σ = 4982808064. Its totient is φ = 503884800.

The previous prime is 1642265423. The next prime is 1642265431. The reversal of 1642265424 is 4245622461.

1642265424 is a `hidden beast` number, since 1 + 6 + 4 + 226 + 5 + 424 = 666.

1642265424 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642265423) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10075167 + ... + 10075329.

Almost surely, 2^1642265424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1642265424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2491404032).

1642265424 is an abundant number, since it is smaller than the sum of its proper divisors (3340542640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1642265424 is a wasteful number, since it uses less digits than its factorization.

1642265424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306 (or 297 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

The square root of 1642265424 is about 40524.8741392247. The cubic root of 1642265424 is about 1179.8164571365.

Adding to 1642265424 its reverse (4245622461), we get a palindrome (5887887885).

The spelling of 1642265424 in words is "one billion, six hundred forty-two million, two hundred sixty-five thousand, four hundred twenty-four".