1203420078 has 112 divisors (see below), whose sum is σ = 3145426656. Its totient is φ = 338022720.

The previous prime is 1203420061. The next prime is 1203420083. The reversal of 1203420078 is 8700243021.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 621600 + ... + 623532.

Almost surely, 2^1203420078 is an apocalyptic number.

1203420078 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1203420078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1572713328).

1203420078 is an abundant number, since it is smaller than the sum of its proper divisors (1942006578).

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

1203420078 is an equidigital number, since it uses as much as digits as its factorization.

1203420078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2021 (or 2006 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 1203420078 is about 34690.3456021989. The cubic root of 1203420078 is about 1063.6671602702.

Adding to 1203420078 its reverse (8700243021), we get a palindrome (9903663099).

The spelling of 1203420078 in words is "one billion, two hundred three million, four hundred twenty thousand, seventy-eight".