1200134420430 has 128 divisors (see below), whose sum is σ = 3358757477376. Its totient is φ = 271504358400.

The previous prime is 1200134420423. The next prime is 1200134420437. The reversal of 1200134420430 is 340244310021.

It is an interprime number because it is at equal distance from previous prime (1200134420423) and next prime (1200134420437).

It is a self number, because there is not a number n which added to its sum of digits gives 1200134420430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200134420437) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1617109 + ... + 2239488.

It is an arithmetic number, because the mean of its divisors is an integer number (26240292792).

Almost surely, 2^{1200134420430} is an apocalyptic number.

1200134420430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1200134420430 is an abundant number, since it is smaller than the sum of its proper divisors (2158623056946).

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

1200134420430 is a wasteful number, since it uses less digits than its factorization.

1200134420430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3856682.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 1200134420430 its reverse (340244310021), we get a palindrome (1540378730451).

The spelling of 1200134420430 in words is "one trillion, two hundred billion, one hundred thirty-four million, four hundred twenty thousand, four hundred thirty".