1123432400442 has 32 divisors (see below), whose sum is σ = 2508128156160. Its totient is φ = 332516988720.

The previous prime is 1123432400411. The next prime is 1123432400473. The reversal of 1123432400442 is 2440042343211.

It is an interprime number because it is at equal distance from previous prime (1123432400411) and next prime (1123432400473).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197923942 + ... + 197929617.

It is an arithmetic number, because the mean of its divisors is an integer number (78379004880).

Almost surely, 2^{1123432400442} is an apocalyptic number.

1123432400442 is an abundant number, since it is smaller than the sum of its proper divisors (1384695755718).

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

1123432400442 is a wasteful number, since it uses less digits than its factorization.

1123432400442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395853618.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 1123432400442 its reverse (2440042343211), we get a palindrome (3563474743653).

The spelling of 1123432400442 in words is "one trillion, one hundred twenty-three billion, four hundred thirty-two million, four hundred thousand, four hundred forty-two".