146420631 has 24 divisors (see below), whose sum is σ = 254433920. Its totient is φ = 79264656.

The previous prime is 146420621. The next prime is 146420639. The reversal of 146420631 is 136024641.

146420631 is a `hidden beast` number, since 1 + 4 + 6 + 4 + 20 + 631 = 666.

It is not a de Polignac number, because 146420631 - 2¹⁰ = 146419607 is a prime.

It is a super-2 number, since 2×146420631² = 42878002364876322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 146420595 and 146420604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146420639) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59965 + ... + 62358.

Almost surely, 2^146420631 is an apocalyptic number.

146420631 is a deficient number, since it is larger than the sum of its proper divisors (108013289).

146420631 is a wasteful number, since it uses less digits than its factorization.

146420631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122355 (or 122352 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 146420631 is about 12100.4392895465. The cubic root of 146420631 is about 527.0689406885.

The spelling of 146420631 in words is "one hundred forty-six million, four hundred twenty thousand, six hundred thirty-one".