245124020 has 36 divisors (see below), whose sum is σ = 546834540. Its totient is φ = 92279808.

The previous prime is 245124017. The next prime is 245124023. The reversal of 245124020 is 20421542.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (245124017) and next prime (245124023).

It can be written as a sum of positive squares in 6 ways, for example, as 24482704 + 220641316 = 4948^2 + 14854^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 245123983 and 245124001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245124023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15425 + ... + 26984.

Almost surely, 2^245124020 is an apocalyptic number.

245124020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245124020 is an abundant number, since it is smaller than the sum of its proper divisors (301710520).

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

245124020 is a wasteful number, since it uses less digits than its factorization.

245124020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42452 (or 42433 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 245124020 is about 15656.4370148511. The cubic root of 245124020 is about 625.8380395347.

Adding to 245124020 its reverse (20421542), we get a palindrome (265545562).

The spelling of 245124020 in words is "two hundred forty-five million, one hundred twenty-four thousand, twenty".