203142423400 has 96 divisors (see below), whose sum is σ = 557190766080. Its totient is φ = 67402080000.

The previous prime is 203142423359. The next prime is 203142423467. The reversal of 203142423400 is 4324241302.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2296951 + ... + 2383750.

It is an arithmetic number, because the mean of its divisors is an integer number (5804070480).

Almost surely, 2^203142423400 is an apocalyptic number.

203142423400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203142423400 is an abundant number, since it is smaller than the sum of its proper divisors (354048342680).

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

203142423400 is a wasteful number, since it uses less digits than its factorization.

203142423400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4680755 (or 4680746 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 203142423400 its reverse (4324241302), we get a palindrome (207466664702).

The spelling of 203142423400 in words is "two hundred three billion, one hundred forty-two million, four hundred twenty-three thousand, four hundred".