240077421 has 6 divisors (see below), whose sum is σ = 346778510. Its totient is φ = 160051608.

The previous prime is 240077401. The next prime is 240077443. The reversal of 240077421 is 124770042.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 130644900 + 109432521 = 11430^2 + 10461^2 .

It is not a de Polignac number, because 240077421 - 2¹¹ = 240075373 is a prime.

It is a super-2 number, since 2×240077421² = 115274336148022482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240077401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13337626 + ... + 13337643.

Almost surely, 2^240077421 is an apocalyptic number.

It is an amenable number.

240077421 is a deficient number, since it is larger than the sum of its proper divisors (106701089).

240077421 is a wasteful number, since it uses less digits than its factorization.

240077421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26675275 (or 26675272 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 240077421 is about 15494.4319353760. The cubic root of 240077421 is about 621.5133176310.

The spelling of 240077421 in words is "two hundred forty million, seventy-seven thousand, four hundred twenty-one".