148291940 has 12 divisors (see below), whose sum is σ = 311413116. Its totient is φ = 59316768.

The previous prime is 148291939. The next prime is 148291961. The reversal of 148291940 is 49192841.

It can be written as a sum of positive squares in 2 ways, for example, as 88322404 + 59969536 = 9398^2 + 7744^2 .

It is a junction number, because it is equal to n+sod(n) for n = 148291894 and 148291903.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3707279 + ... + 3707318.

It is an arithmetic number, because the mean of its divisors is an integer number (25951093).

Almost surely, 2^148291940 is an apocalyptic number.

148291940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

148291940 is an abundant number, since it is smaller than the sum of its proper divisors (163121176).

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

148291940 is a wasteful number, since it uses less digits than its factorization.

148291940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7414606 (or 7414604 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 148291940 is about 12177.5178094717. The cubic root of 148291940 is about 529.3048201360.

Subtracting from 148291940 its reverse (49192841), we obtain a palindrome (99099099).

The spelling of 148291940 in words is "one hundred forty-eight million, two hundred ninety-one thousand, nine hundred forty".