245202123400 has 48 divisors (see below), whose sum is σ = 613948400100. Its totient is φ = 90536167680.

The previous prime is 245202123337. The next prime is 245202123407. The reversal of 245202123400 is 4321202542.

It can be written as a sum of positive squares in 6 ways, for example, as 64820141604 + 180381981796 = 254598^2 + 424714^2 .

It is a super-3 number, since 3×245202123400³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (245202123407) 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, 47151655 + ... + 47156854.

Almost surely, 2^245202123400 is an apocalyptic number.

245202123400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245202123400 is an abundant number, since it is smaller than the sum of its proper divisors (368746276700).

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

245202123400 is a wasteful number, since it uses less digits than its factorization.

245202123400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94308538 (or 94308529 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 245202123400 its reverse (4321202542), we get a palindrome (249523325942).

The spelling of 245202123400 in words is "two hundred forty-five billion, two hundred two million, one hundred twenty-three thousand, four hundred".