148742820 has 36 divisors (see below), whose sum is σ = 451187100. Its totient is φ = 39664704.

The previous prime is 148742813. The next prime is 148742821. The reversal of 148742820 is 28247841.

It can be written as a sum of positive squares in 2 ways, for example, as 94012416 + 54730404 = 9696^2 + 7398^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (148742821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 412995 + ... + 413354.

It is an arithmetic number, because the mean of its divisors is an integer number (12532975).

Almost surely, 2^148742820 is an apocalyptic number.

148742820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

148742820 is an abundant number, since it is smaller than the sum of its proper divisors (302444280).

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

148742820 is a wasteful number, since it uses less digits than its factorization.

148742820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826364 (or 826359 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The square root of 148742820 is about 12196.0165627962. The cubic root of 148742820 is about 529.8407258437.

The spelling of 148742820 in words is "one hundred forty-eight million, seven hundred forty-two thousand, eight hundred twenty".