69721442 has 8 divisors (see below), whose sum is σ = 119522496. Its totient is φ = 29880612.

The previous prime is 69721433. The next prime is 69721451. The reversal of 69721442 is 24412796.

It is an interprime number because it is at equal distance from previous prime (69721433) and next prime (69721451).

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

It is a super-2 number, since 2×69721442² = 9722158949118728, which contains 22 as substring.

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, 2490038 + ... + 2490065.

It is an arithmetic number, because the mean of its divisors is an integer number (14940312).

Almost surely, 2^69721442 is an apocalyptic number.

69721442 is a deficient number, since it is larger than the sum of its proper divisors (49801054).

69721442 is a wasteful number, since it uses less digits than its factorization.

69721442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4980112.

The product of its digits is 24192, while the sum is 35.

The square root of 69721442 is about 8349.9366464662. The cubic root of 69721442 is about 411.5811284702.

The spelling of 69721442 in words is "sixty-nine million, seven hundred twenty-one thousand, four hundred forty-two".