145920740 has 48 divisors (see below), whose sum is σ = 365444352. Its totient is φ = 47853696.

The previous prime is 145920737. The next prime is 145920757. The reversal of 145920740 is 47029541.

145920740 = T₃₂₅ + T₃₂₆ + ... + T₉₆₈.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 145920697 and 145920706.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19439 + ... + 25878.

It is an arithmetic number, because the mean of its divisors is an integer number (7613424).

Almost surely, 2^145920740 is an apocalyptic number.

145920740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145920740 is an abundant number, since it is smaller than the sum of its proper divisors (219523612).

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

145920740 is a wasteful number, since it uses less digits than its factorization.

145920740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45356 (or 45354 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 145920740 is about 12079.7657262051. The cubic root of 145920740 is about 526.4684391712.

The spelling of 145920740 in words is "one hundred forty-five million, nine hundred twenty thousand, seven hundred forty".