1242023043 has 32 divisors (see below), whose sum is σ = 1776992256. Its totient is φ = 768918528.

The previous prime is 1242023021. The next prime is 1242023047. The reversal of 1242023043 is 3403202421.

It is not a de Polignac number, because 1242023043 - 2¹⁷ = 1241891971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1242023047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1508730 + ... + 1509552.

It is an arithmetic number, because the mean of its divisors is an integer number (55531008).

Almost surely, 2^1242023043 is an apocalyptic number.

1242023043 is a deficient number, since it is larger than the sum of its proper divisors (534969213).

1242023043 is a wasteful number, since it uses less digits than its factorization.

1242023043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 1242023043 is about 35242.3472969665. The cubic root of 1242023043 is about 1074.9210089426.

Adding to 1242023043 its reverse (3403202421), we get a palindrome (4645225464).

The spelling of 1242023043 in words is "one billion, two hundred forty-two million, twenty-three thousand, forty-three".