40420761 has 16 divisors (see below), whose sum is σ = 55617408. Its totient is φ = 26092800.

The previous prime is 40420753. The next prime is 40420763. The reversal of 40420761 is 16702404.

It is not a de Polignac number, because 40420761 - 2³ = 40420753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40420763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25996 + ... + 27506.

It is an arithmetic number, because the mean of its divisors is an integer number (3476088).

Almost surely, 2^40420761 is an apocalyptic number.

It is an amenable number.

40420761 is a deficient number, since it is larger than the sum of its proper divisors (15196647).

40420761 is a wasteful number, since it uses less digits than its factorization.

40420761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1792.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 40420761 is about 6357.7323787652. The cubic root of 40420761 is about 343.1901610814.

The spelling of 40420761 in words is "forty million, four hundred twenty thousand, seven hundred sixty-one".