1420542123 has 128 divisors (see below), whose sum is σ = 2690924544. Its totient is φ = 642470400.

The previous prime is 1420542121. The next prime is 1420542127. The reversal of 1420542123 is 3212450241.

It is not a de Polignac number, because 1420542123 - 2¹ = 1420542121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1420542093 and 1420542102.

It is not an unprimeable number, because it can be changed into a prime (1420542121) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 9047961 + ... + 9048117.

It is an arithmetic number, because the mean of its divisors is an integer number (21022848).

Almost surely, 2^1420542123 is an apocalyptic number.

1420542123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1420542123 is a deficient number, since it is larger than the sum of its proper divisors (1270382421).

1420542123 is a wasteful number, since it uses less digits than its factorization.

1420542123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 1420542123 is about 37690.0799017460. The cubic root of 1420542123 is about 1124.1338842790.

Adding to 1420542123 its reverse (3212450241), we get a palindrome (4632992364).

The spelling of 1420542123 in words is "one billion, four hundred twenty million, five hundred forty-two thousand, one hundred twenty-three".