71420454 has 40 divisors (see below), whose sum is σ = 182899728. Its totient is φ = 20405520.

The previous prime is 71420441. The next prime is 71420477. The reversal of 71420454 is 45402417.

It is a super-2 number, since 2×71420454² = 10201762499132232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 30357 + ... + 32624.

Almost surely, 2^71420454 is an apocalyptic number.

71420454 is an abundant number, since it is smaller than the sum of its proper divisors (111479274).

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

71420454 is a wasteful number, since it uses less digits than its factorization.

71420454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63002 (or 62993 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 71420454 is about 8451.0623000899. The cubic root of 71420454 is about 414.8975486199.

The spelling of 71420454 in words is "seventy-one million, four hundred twenty thousand, four hundred fifty-four".