7531420123 has 8 divisors (see below), whose sum is σ = 7574074992. Its totient is φ = 7488810336.

The previous prime is 7531420103. The next prime is 7531420163. The reversal of 7531420123 is 3210241357.

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 7531420123 - 2¹³ = 7531411931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7531420091 and 7531420100.

It is not an unprimeable number, because it can be changed into a prime (7531420103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 357561 + ... + 378037.

It is an arithmetic number, because the mean of its divisors is an integer number (946759374).

Almost surely, 2^7531420123 is an apocalyptic number.

7531420123 is a deficient number, since it is larger than the sum of its proper divisors (42654869).

7531420123 is a wasteful number, since it uses less digits than its factorization.

7531420123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22541.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 7531420123 is about 86783.7549487230. The cubic root of 7531420123 is about 1960.1634705909.

The spelling of 7531420123 in words is "seven billion, five hundred thirty-one million, four hundred twenty thousand, one hundred twenty-three".