1423240043 has 8 divisors (see below), whose sum is σ = 1439093040. Its totient is φ = 1407467520.

The previous prime is 1423240037. The next prime is 1423240057. The reversal of 1423240043 is 3400423241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1423240043 - 2⁸ = 1423239787 is a prime.

It is a super-2 number, since 2×1423240043² = 4051224439997283698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1423240003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15803 + ... + 55643.

It is an arithmetic number, because the mean of its divisors is an integer number (179886630).

Almost surely, 2^1423240043 is an apocalyptic number.

1423240043 is a deficient number, since it is larger than the sum of its proper divisors (15852997).

1423240043 is a wasteful number, since it uses less digits than its factorization.

1423240043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40237.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 1423240043 is about 37725.8537743018. The cubic root of 1423240043 is about 1124.8450928768.

Adding to 1423240043 its reverse (3400423241), we get a palindrome (4823663284).

The spelling of 1423240043 in words is "one billion, four hundred twenty-three million, two hundred forty thousand, forty-three".