145451412 has 18 divisors (see below), whose sum is σ = 367668938. Its totient is φ = 48483792.

The previous prime is 145451399. The next prime is 145451437. The reversal of 145451412 is 214154541.

145451412 is a `hidden beast` number, since 145 + 4 + 514 + 1 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 140280336 + 5171076 = 11844^2 + 2274^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×145451412² = 42312226505587488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 2020123 + ... + 2020194.

Almost surely, 2^145451412 is an apocalyptic number.

145451412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

145451412 is an abundant number, since it is smaller than the sum of its proper divisors (222217526).

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

145451412 is a wasteful number, since it uses less digits than its factorization.

145451412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4040327 (or 4040322 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 145451412 is about 12060.3238762481. The cubic root of 145451412 is about 525.9034023869.

The spelling of 145451412 in words is "one hundred forty-five million, four hundred fifty-one thousand, four hundred twelve".