69221142 has 80 divisors (see below), whose sum is σ = 167386560. Its totient is φ = 21310128.

The previous prime is 69221137. The next prime is 69221147. The reversal of 69221142 is 24112296.

It is an interprime number because it is at equal distance from previous prime (69221137) and next prime (69221147).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69221147) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 132093 + ... + 132615.

It is an arithmetic number, because the mean of its divisors is an integer number (2092332).

Almost surely, 2^69221142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69221142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83693280).

69221142 is an abundant number, since it is smaller than the sum of its proper divisors (98165418).

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

69221142 is a wasteful number, since it uses less digits than its factorization.

69221142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599 (or 590 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 69221142 is about 8319.9243986950. The cubic root of 69221142 is about 410.5943037040.

The spelling of 69221142 in words is "sixty-nine million, two hundred twenty-one thousand, one hundred forty-two".