75420134 has 16 divisors (see below), whose sum is σ = 117349776. Its totient is φ = 36324000.

The previous prime is 75420133. The next prime is 75420187. The reversal of 75420134 is 43102457.

It is a super-2 number, since 2×75420134² = 11376393225155912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75420133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2429 + ... + 12519.

It is an arithmetic number, because the mean of its divisors is an integer number (7334361).

Almost surely, 2^75420134 is an apocalyptic number.

75420134 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

75420134 is a deficient number, since it is larger than the sum of its proper divisors (41929642).

75420134 is a wasteful number, since it uses less digits than its factorization.

75420134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10231.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 75420134 is about 8684.4766105966. The cubic root of 75420134 is about 422.5023218014.

The spelling of 75420134 in words is "seventy-five million, four hundred twenty thousand, one hundred thirty-four".