161412740 has 12 divisors (see below), whose sum is σ = 338966796. Its totient is φ = 64565088.

The previous prime is 161412737. The next prime is 161412761. The reversal of 161412740 is 47214161.

It can be written as a sum of positive squares in 2 ways, for example, as 89264704 + 72148036 = 9448^2 + 8494^2 .

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, 4035299 + ... + 4035338.

It is an arithmetic number, because the mean of its divisors is an integer number (28247233).

Almost surely, 2^161412740 is an apocalyptic number.

161412740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161412740 is an abundant number, since it is smaller than the sum of its proper divisors (177554056).

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

161412740 is a wasteful number, since it uses less digits than its factorization.

161412740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8070646 (or 8070644 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 161412740 is about 12704.8313644849. The cubic root of 161412740 is about 544.4766628473.

It can be divided in two parts, 16141 and 2740, that added together give a palindrome (18881).

The spelling of 161412740 in words is "one hundred sixty-one million, four hundred twelve thousand, seven hundred forty".