1123428715954 has 4 divisors (see below), whose sum is σ = 1685143073934. Its totient is φ = 561714357976.

The previous prime is 1123428715951. The next prime is 1123428715957. The reversal of 1123428715954 is 4595178243211.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1123428715951) and next prime (1123428715957).

It can be written as a sum of positive squares in only one way, i.e., 767822825025 + 355605890929 = 876255^2 + 596327^2 .

It is not an unprimeable number, because it can be changed into a prime (1123428715951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280857178987 + ... + 280857178990.

Almost surely, 2^{1123428715954} is an apocalyptic number.

1123428715954 is a deficient number, since it is larger than the sum of its proper divisors (561714357980).

1123428715954 is an equidigital number, since it uses as much as digits as its factorization.

1123428715954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561714357979.

The product of its digits is 2419200, while the sum is 52.

The spelling of 1123428715954 in words is "one trillion, one hundred twenty-three billion, four hundred twenty-eight million, seven hundred fifteen thousand, nine hundred fifty-four".