213933742 has 16 divisors (see below), whose sum is σ = 352750464. Its totient is φ = 96499000.

The previous prime is 213933737. The next prime is 213933757. The reversal of 213933742 is 247339312.

213933742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×213933742² = 91535291932245128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213933698 and 213933707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34234 + ... + 39997.

It is an arithmetic number, because the mean of its divisors is an integer number (22046904).

Almost surely, 2^213933742 is an apocalyptic number.

213933742 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

213933742 is a deficient number, since it is larger than the sum of its proper divisors (138816722).

213933742 is a wasteful number, since it uses less digits than its factorization.

213933742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74375.

The product of its digits is 27216, while the sum is 34.

The square root of 213933742 is about 14626.4740111894. The cubic root of 213933742 is about 598.0806649499.

The spelling of 213933742 in words is "two hundred thirteen million, nine hundred thirty-three thousand, seven hundred forty-two".