211421342 has 8 divisors (see below), whose sum is σ = 345962232. Its totient is φ = 96100600.

The previous prime is 211421321. The next prime is 211421387. The reversal of 211421342 is 243124112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4805009 + ... + 4805052.

It is an arithmetic number, because the mean of its divisors is an integer number (43245279).

Almost surely, 2^211421342 is an apocalyptic number.

211421342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

211421342 is a deficient number, since it is larger than the sum of its proper divisors (134540890).

211421342 is a wasteful number, since it uses less digits than its factorization.

211421342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9610074.

The product of its digits is 384, while the sum is 20.

The square root of 211421342 is about 14540.3350030183. The cubic root of 211421342 is about 595.7301884453.

Adding to 211421342 its reverse (243124112), we get a palindrome (454545454).

The spelling of 211421342 in words is "two hundred eleven million, four hundred twenty-one thousand, three hundred forty-two".