213569742 has 16 divisors (see below), whose sum is σ = 452265552. Its totient is φ = 67002240.

The previous prime is 213569689. The next prime is 213569767. The reversal of 213569742 is 247965312.

It is a super-2 number, since 2×213569742² = 91224069395893128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 213569742.

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, 1046809 + ... + 1047012.

It is an arithmetic number, because the mean of its divisors is an integer number (28266597).

Almost surely, 2^213569742 is an apocalyptic number.

213569742 is an abundant number, since it is smaller than the sum of its proper divisors (238695810).

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

213569742 is a wasteful number, since it uses less digits than its factorization.

213569742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2093843.

The product of its digits is 90720, while the sum is 39.

The square root of 213569742 is about 14614.0255234484. The cubic root of 213569742 is about 597.7412686692.

The spelling of 213569742 in words is "two hundred thirteen million, five hundred sixty-nine thousand, seven hundred forty-two".