67521942 has 12 divisors (see below), whose sum is σ = 146297580. Its totient is φ = 22507308.

The previous prime is 67521931. The next prime is 67521973. The reversal of 67521942 is 24912576.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 67521897 and 67521906.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1875592 + ... + 1875627.

It is an arithmetic number, because the mean of its divisors is an integer number (12191465).

Almost surely, 2^67521942 is an apocalyptic number.

67521942 is an abundant number, since it is smaller than the sum of its proper divisors (78775638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67521942 is a wasteful number, since it uses less digits than its factorization.

67521942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3751227 (or 3751224 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 67521942 is about 8217.1736016711. The cubic root of 67521942 is about 407.2067560440.

The spelling of 67521942 in words is "sixty-seven million, five hundred twenty-one thousand, nine hundred forty-two".