145439100 has 54 divisors (see below), whose sum is σ = 455873600. Its totient is φ = 38783520.

The previous prime is 145439087. The next prime is 145439113. The reversal of 145439100 is 1934541.

145439100 is a `hidden beast` number, since 14 + 543 + 9 + 100 = 666.

It is an interprime number because it is at equal distance from previous prime (145439087) and next prime (145439113).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 79900 + ... + 81699.

Almost surely, 2^145439100 is an apocalyptic number.

145439100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145439100 is an abundant number, since it is smaller than the sum of its proper divisors (310434500).

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

145439100 is a wasteful number, since it uses less digits than its factorization.

145439100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161619 (or 161609 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 145439100 is about 12059.8134313927. The cubic root of 145439100 is about 525.8885632841. Note that the first 3 decimals are identical.

The spelling of 145439100 in words is "one hundred forty-five million, four hundred thirty-nine thousand, one hundred".