120678531 has 4 divisors (see below), whose sum is σ = 160904712. Its totient is φ = 80452352.

The previous prime is 120678491. The next prime is 120678533. The reversal of 120678531 is 135876021.

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

It is a cyclic number.

It is not a de Polignac number, because 120678531 - 2¹⁰ = 120677507 is a prime.

It is a super-2 number, since 2×120678531² = 29126615688635922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 120678492 and 120678501.

It is not an unprimeable number, because it can be changed into a prime (120678533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20113086 + ... + 20113091.

It is an arithmetic number, because the mean of its divisors is an integer number (40226178).

Almost surely, 2^120678531 is an apocalyptic number.

120678531 is a deficient number, since it is larger than the sum of its proper divisors (40226181).

120678531 is an equidigital number, since it uses as much as digits as its factorization.

120678531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40226180.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 120678531 is about 10985.3780544868. The cubic root of 120678531 is about 494.1703355188.

The spelling of 120678531 in words is "one hundred twenty million, six hundred seventy-eight thousand, five hundred thirty-one".