139722030 has 192 divisors, whose sum is σ = 443232000. Its totient is φ = 31219776.

The previous prime is 139722017. The next prime is 139722047. The reversal of 139722030 is 30227931.

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

It is a junction number, because it is equal to n+sod(n) for n = 139721985 and 139722003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 780481 + ... + 780659.

It is an arithmetic number, because the mean of its divisors is an integer number (2308500).

Almost surely, 2^139722030 is an apocalyptic number.

139722030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 139722030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221616000).

139722030 is an abundant number, since it is smaller than the sum of its proper divisors (303509970).

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

139722030 is a wasteful number, since it uses less digits than its factorization.

139722030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268 (or 255 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 139722030 is about 11820.4073533868. The cubic root of 139722030 is about 518.9055259225.

Adding to 139722030 its reverse (30227931), we get a palindrome (169949961).

The spelling of 139722030 in words is "one hundred thirty-nine million, seven hundred twenty-two thousand, thirty".