1295238420 has 144 divisors (see below), whose sum is σ = 4504002048. Its totient is φ = 295142400.

The previous prime is 1295238403. The next prime is 1295238457. The reversal of 1295238420 is 248325921.

It is a happy number.

1295238420 is a `hidden beast` number, since 129 + 523 + 8 + 4 + 2 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 461020 + ... + 463820.

It is an arithmetic number, because the mean of its divisors is an integer number (31277792).

Almost surely, 2^1295238420 is an apocalyptic number.

1295238420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1295238420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2252001024).

1295238420 is an abundant number, since it is smaller than the sum of its proper divisors (3208763628).

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

1295238420 is a wasteful number, since it uses less digits than its factorization.

1295238420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3190 (or 3185 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 1295238420 is about 35989.4209456057. The cubic root of 1295238420 is about 1090.0587517079.

The spelling of 1295238420 in words is "one billion, two hundred ninety-five million, two hundred thirty-eight thousand, four hundred twenty".