207342421 has 48 divisors (see below), whose sum is σ = 275607360. Its totient is φ = 152824320.

The previous prime is 207342419. The next prime is 207342433. The reversal of 207342421 is 124243702.

It is a happy number.

It is not a de Polignac number, because 207342421 - 2¹ = 207342419 is a prime.

It is a super-2 number, since 2×207342421² = 85981759092282482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207342491) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3094630 + ... + 3094696.

It is an arithmetic number, because the mean of its divisors is an integer number (5741820).

Almost surely, 2^207342421 is an apocalyptic number.

It is an amenable number.

207342421 is a deficient number, since it is larger than the sum of its proper divisors (68264939).

207342421 is a wasteful number, since it uses less digits than its factorization.

207342421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 207342421 is about 14399.3896051187. The cubic root of 207342421 is about 591.8741714631.

The spelling of 207342421 in words is "two hundred seven million, three hundred forty-two thousand, four hundred twenty-one".