1239129030 has 32 divisors (see below), whose sum is σ = 2984665824. Its totient is φ = 329239296.

The previous prime is 1239129011. The next prime is 1239129043. The reversal of 1239129030 is 309219321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66247 + ... + 82866.

It is an arithmetic number, because the mean of its divisors is an integer number (93270807).

Almost surely, 2^1239129030 is an apocalyptic number.

1239129030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1239129030 is an abundant number, since it is smaller than the sum of its proper divisors (1745536794).

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

1239129030 is a wasteful number, since it uses less digits than its factorization.

1239129030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149400.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 1239129030 is about 35201.2646079654. The cubic root of 1239129030 is about 1074.0854756866.

The spelling of 1239129030 in words is "one billion, two hundred thirty-nine million, one hundred twenty-nine thousand, thirty".