117129400 has 48 divisors (see below), whose sum is σ = 276422040. Its totient is φ = 46147200.

The previous prime is 117129373. The next prime is 117129427. The reversal of 117129400 is 4921711.

It is an interprime number because it is at equal distance from previous prime (117129373) and next prime (117129427).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9030 + ... + 17770.

Almost surely, 2^117129400 is an apocalyptic number.

117129400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117129400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138211020).

117129400 is an abundant number, since it is smaller than the sum of its proper divisors (159292640).

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

117129400 is a wasteful number, since it uses less digits than its factorization.

117129400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8824 (or 8815 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 117129400 is about 10822.6336905580. The cubic root of 117129400 is about 489.2775693115.

It can be divided in two parts, 11712 and 9400, that added together give a palindrome (21112).

The spelling of 117129400 in words is "one hundred seventeen million, one hundred twenty-nine thousand, four hundred".