146721642 has 16 divisors (see below), whose sum is σ = 297577152. Its totient is φ = 48218240.

The previous prime is 146721599. The next prime is 146721647. The reversal of 146721642 is 246127641.

It is a super-3 number, since 3×146721642³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (146721647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171783 + ... + 172634.

It is an arithmetic number, because the mean of its divisors is an integer number (18598572).

Almost surely, 2^146721642 is an apocalyptic number.

146721642 is an abundant number, since it is smaller than the sum of its proper divisors (150855510).

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

146721642 is a wasteful number, since it uses less digits than its factorization.

146721642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344493.

The product of its digits is 16128, while the sum is 33.

The square root of 146721642 is about 12112.8709231131. The cubic root of 146721642 is about 527.4298756015.

The spelling of 146721642 in words is "one hundred forty-six million, seven hundred twenty-one thousand, six hundred forty-two".