154121130 has 80 divisors (see below), whose sum is σ = 417522600. Its totient is φ = 40791168.

The previous prime is 154121117. The next prime is 154121153. The reversal of 154121130 is 31121451.

It can be written as a sum of positive squares in 4 ways, for example, as 104714289 + 49406841 = 10233^2 + 7029^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 120052 + ... + 121328.

Almost surely, 2^154121130 is an apocalyptic number.

154121130 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 154121130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208761300).

154121130 is an abundant number, since it is smaller than the sum of its proper divisors (263401470).

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

154121130 is a wasteful number, since it uses less digits than its factorization.

154121130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445 (or 1436 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 154121130 is about 12414.5531534566. The cubic root of 154121130 is about 536.1513388837.

Adding to 154121130 its reverse (31121451), we get a palindrome (185242581).

The spelling of 154121130 in words is "one hundred fifty-four million, one hundred twenty-one thousand, one hundred thirty".