42400245400 has 48 divisors (see below), whose sum is σ = 99356855040. Its totient is φ = 16826544000.

The previous prime is 42400245379. The next prime is 42400245421. The reversal of 42400245400 is 454200424.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42400245379) and next prime (42400245421).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 809251 + ... + 860050.

It is an arithmetic number, because the mean of its divisors is an integer number (2069934480).

Almost surely, 2^42400245400 is an apocalyptic number.

42400245400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42400245400 is an abundant number, since it is smaller than the sum of its proper divisors (56956609640).

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

42400245400 is a wasteful number, since it uses less digits than its factorization.

42400245400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669444 (or 1669435 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 25.

Adding to 42400245400 its reverse (454200424), we get a palindrome (42854445824).

It can be divided in two parts, 4240024 and 5400, that added together give a palindrome (4245424).

The spelling of 42400245400 in words is "forty-two billion, four hundred million, two hundred forty-five thousand, four hundred".