755427420 has 72 divisors (see below), whose sum is σ = 2499784560. Its totient is φ = 183133440.

The previous prime is 755427401. The next prime is 755427427. The reversal of 755427420 is 24724557.

It is a happy number.

755427420 is a `hidden beast` number, since 75 + 542 + 7 + 42 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (755427427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 188785 + ... + 192744.

It is an arithmetic number, because the mean of its divisors is an integer number (34719230).

Almost surely, 2^755427420 is an apocalyptic number.

It is an amenable number.

755427420 is an abundant number, since it is smaller than the sum of its proper divisors (1744357140).

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

755427420 is a wasteful number, since it uses less digits than its factorization.

755427420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381555 (or 381550 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 36.

The square root of 755427420 is about 27485.0399308424. The cubic root of 755427420 is about 910.7466480113.

The spelling of 755427420 in words is "seven hundred fifty-five million, four hundred twenty-seven thousand, four hundred twenty".